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Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.

Avengers Compound Battle

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76131 Avengers Compound Battle

670 pieces in 271 part and color combinations, plus 6 minifigures.

LEGO counts 699 pieces. This inventory comes from a separate parts catalog and lists 704, including the 34 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Plates 105 pieces

  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 1 x 1 Dark Blue Part 3024 Element 6554188 or 4184108 1 spare in the box ×2
  • Plate 1 x 2 Dark Blue Part 3023 Element 6554191 or 4528981 ×11
  • Plate 1 x 4 Dark Blue Part 3710 Element 4502089 or 4177739 ×10
  • Plate 2 x 2 Corner Dark Blue Part 2420 Element 4528482 or 4252046 ×4
  • Plate 2 x 3 Dark Blue Part 3021 Element 6554192 or 4530028 ×2
  • Plate 2 x 4 Dark Blue Part 3020 Element 6554194 or 4667595 ×4
  • Plate 2 x 6 Dark Blue Part 3795 Element 6097420 or 4649974 ×1
  • Plate 4 x 4 Dark Blue Part 3031 Element 6027625 ×2
  • Plate 1 x 3 Dark Bluish Gray Part 3623 Element 4211133 ×1
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×1
  • Plate 16 x 16 Dark Bluish Gray Part 91405 Element 6004927 ×1
  • Plate 2 x 16 Dark Bluish Gray Part 4282 Element 4210796 ×1
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×7
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×9
  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 ×1
  • Plate 8 x 16 Dark Bluish Gray Part 92438 Element 4654613 ×1
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×3
  • Plate 1 x 3 Light Bluish Gray Part 3623 Element 4211429 or 3623194 ×1
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×3
  • Plate 1 x 8 Light Bluish Gray Part 3460 Element 4211425 ×1
  • Plate 2 x 10 Light Bluish Gray Part 3832 Element 4211462 ×1
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×1
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 1 spare in the box ×2
  • Plate 1 x 10 White Part 4477 Element 6552113 or 6550148 ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×6
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×9
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×1
  • Plate 4 x 10 White Part 3030 Element 6550137 or 4503008 ×1
  • Plate 4 x 4 White Part 3031 Element 6552127 or 4243812 ×1
  • Plate 4 x 6 White Part 3032 Element 303201 ×3
  • Plate 6 x 10 White Part 3033 Element 4528341 or 303301 ×2
  • Plate 6 x 8 White Part 3036 Element 303651 or 303601 ×1
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×1

Plates Special 64 pieces

  • Bracket 1 x 2 - 2 x 2 Inverted Black Part 99207 Element 6000650 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Black Part 61252 Element 6308000 or 4517925 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 Also in Dark Bluish Gray ×4
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm] Black Part 88072 Element 6261348 or 4569733 ×1
  • Plate Special 1 x 2, Top Clip [Split] Black Part 92280 Element 4598528 ×2
  • Bracket 1 x 2 - 2 x 2 Dark Blue Part 44728 Element 6554216 or 6224778 ×4
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Dark Blue Part 15573 Element 6554197 or 6092588 ×1
  • Bracket 1 x 2 - 1 x 2 Inverted Dark Bluish Gray Part 99780 Element 6000606 ×2
  • Bracket 1 x 2 - 2 x 2 Dark Bluish Gray Part 44728 Element 6117972 or 6048854 ×1
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Dark Bluish Gray Part 4081b Element 6281996 or 4632574 ×4
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 Also in Black ×2
  • Plate Special 1 x 2 [Side Handle Closed Ends] Dark Bluish Gray Part 48336 Element 6146321 ×1
  • Plate Special 4 x 4, Studs on One Edge Plain] Dark Bluish Gray Part 6179 Element 4509911 or 4210849 ×1
  • Plate Special 2 x 2 with Bar Frame Octagonal, Reinforced, Completely Round Studs Flat Silver Part 75937 Element 6020990 ×1
  • Bracket 1 x 2 - 1 x 2 Light Bluish Gray Part 99781 Element 4654582 ×2
  • Bracket 1 x 2 - 1 x 2 Inverted Light Bluish Gray Part 99780 Element 6004990 ×1
  • Bracket 1 x 2 - 1 x 4 [Rounded Corners] Light Bluish Gray Part 10201 Element 6014615 ×2
  • Bracket 1 x 2 - 2 x 2 Light Bluish Gray Part 44728 Element 6117967 or 6009014 ×2
  • Bracket 1 x 2 - 2 x 2 Inverted Light Bluish Gray Part 99207 Element 4654580 ×4
  • Plate Special 1 x 2 with Door Rail Light Bluish Gray Part 32028 Element 4211568 ×2
  • Plate Special 1 x 2, Top Clip [Split] Light Bluish Gray Part 92280 Element 4598526 ×6
  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) Light Bluish Gray Part 34103 Element 6211969 ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib] Light Bluish Gray Part 10247 Element 6045988 ×8
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×2
  • Plate Special 1 x 2 with Clip Horizontal on Side Red Part 11476 Element 6313120 or 6178488 ×1
  • Plate Special Round 1 x 1 with Hollow Stud and Bar on Underside Trans-Clear Part 25893 Element 6321083 or 6153264 1 spare in the box ×2
  • Plate Special / Shield Rectangular with 4 Studs, Handle White Part 30166 Element 6188400 ×1
  • Plate Special 2 x 2 with Only 2 studs White Part 33909 Element 6552170 or 6548287 ×1

Plates Round Curved and Dishes 63 pieces

  • Plate Round 1 x 1 with Open Stud Black Part 85861 Element 6168646 or 6100627 1 spare in the box ×2
  • Plate Round 6 x 6 with Hole Black Part 11213 Element 6187587 ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs Black Part 35480 Element 6210270 ×1
  • Plate Round 4 x 4 with Pin Hole Dark Bluish Gray Part 60474 Element 4528323 ×3
  • Plate Round 1 x 1 Swirled Top Flat Silver Part 15470 Element 6058160 1 spare in the box ×2
  • Dish 3 x 3 Inverted [Radar] Light Bluish Gray Part 43898 Element 6070564 or 4568360 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Bluish Gray Part 4032a Element 4211475 ×1
  • Plate Round 4 x 4 with Pin Hole Light Bluish Gray Part 60474 Element 4515351 ×1
  • Plate Round Corner 4 x 4 Light Bluish Gray Part 30565 Element 4579294 or 4211662 ×1
  • Plate Round 1 x 1 with Solid Stud Pearl Gold Part 6141 Element 4523159 1 spare in the box ×8
  • Plate Round 1 x 1 with Solid Stud Pearl Titanium Part 6141 Element 6038201 1 spare in the box ×24
  • Plate Round 1 x 1 with Open Stud Reddish Brown Part 85861 Element 6215659 1 spare in the box ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Tan Part 4032a Element 4140562 or 403205 ×3
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Clear Part 2654 Element 6581772 or 6163901 ×2
  • Dish 4 x 4 Inverted with Open Stud [Radar] Trans-Neon Orange Part 35394 Element 6252268 ×1
  • Dish 6 x 6 Inverted, Radar / Webbed [Anti-studs at 90°] Trans-Orange Part 4285b Element 6258885 ×1
  • Plate Round 1 x 1 with Open Stud Trans-Orange Part 85861 Element 6510162 or 6174023 1 spare in the box ×8
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×1
  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×1

Bricks 48 pieces

  • Brick 1 x 4 Dark Blue Part 3010 Element 4264569 ×2
  • Brick 2 x 2 Corner Dark Blue Part 2357 Element 6554217 or 6228123 ×4
  • Brick 1 x 1 Light Bluish Gray Part 3005 Element 4211389 ×2
  • Brick 1 x 2 Light Bluish Gray Part 3004 Element 4211388 ×1
  • Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×1
  • Brick 2 x 2 Corner Light Bluish Gray Part 2357 Element 4211349 ×2
  • Brick 2 x 2 Corner Tan Part 2357 Element 4124455 or 4112541 ×1
  • Brick 1 x 2 without Bottom Tube Trans-Brown Part 3065 Element 6514267 or 6244909 ×1
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×8
  • Brick 1 x 1 x 5 with Solid Stud White Part 2453b Element 6550132 or 245301 ×3
  • Brick 1 x 16 White Part 2465 Element 6552092 or 246501 ×2
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×2
  • Brick 1 x 2 x 5 with Hollow Studs White Part 2454b Element 6619280 or 245401 ×1
  • Brick 1 x 3 White Part 3622 Element 6550143 or 362201 ×1
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×12
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×1
  • Brick 1 x 8 White Part 3008 Element 6550134 or 300801 ×2
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×2

Tiles 48 pieces

  • Tile 1 x 1 with Groove Dark Blue Part 3070b Element 6554193 or 4631385 1 spare in the box ×6
  • Tile 1 x 2 with Groove Dark Blue Part 3069b Element 6554190 or 4528488 ×8
  • Tile 1 x 3 Dark Blue Part 63864 Element 6554203 or 6132566 ×4
  • Tile 1 x 6 with Groove Dark Blue Part 6636 Element 4252437 ×2
  • Tile 2 x 2 with Groove Dark Blue Part 3068b Element 4205004 ×3
  • Tile 1 x 8 with Groove Dark Bluish Gray Part 4162 Element 5210651 or 4211008 ×3
  • Tile 6 x 6 with Bottom Tubes Dark Bluish Gray Part 10202 Element 6147337 ×1
  • Tile 1 x 1 with Groove Light Bluish Gray Part 3070b Element 4211415 1 spare in the box ×2
  • Tile 1 x 1 with Keypad Print Light Bluish Gray Part 3070bpr0166 Element 6142309 1 spare in the box ×1
  • Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×5
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×2
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×1
  • Tile 6 x 6 with Bottom Tubes Light Bluish Gray Part 10202 Element 6014617 ×1
  • Tile 2 x 2 with Groove Reddish Brown Part 3068b Element 4271949 or 4264030 ×1
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 1 spare in the box ×3
  • Tile 1 x 2 with Computer Keyboard Standard Print White Part 3069bpr0030 Element 4293350 ×1
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×1
  • Tile 2 x 4 with Groove White Part 87079 Element 6548271 or 4560178 ×3

Bricks Sloped 38 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Blue Part 54200 Element 4504374 or 4502092 1 spare in the box ×4
  • Brick Sloped 33° 3 x 1 Dark Blue Part 4286 Element 6103774 or 4288231 ×2
  • Brick Sloped 33° 3 x 2 Dark Blue Part 3298 Element 6025376 or 4521777 ×1
  • Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud Dark Blue Part 28192 Element 6166857 ×2
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Dark Blue Part 3747b ×2
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Dark Bluish Gray Part 4871 Element 4211076 ×1
  • Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 Recessed, 2 Holes Dark Bluish Gray Part 72454 Element 4658974 ×1
  • Brick Sloped 30° 1 x 2 x 2/3 Light Bluish Gray Part 85984 Element 4568637 ×7
  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Light Bluish Gray Part 15672 Element 6093859 ×2
  • Brick Sloped Inverted 45° 2 x 1 Light Bluish Gray Part 3665 Element 4211437 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Bluish Gray Part 3660 Element 4211436 ×5
  • Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×2
  • Brick Sloped 45° 2 x 4 White Part 3037 Element 6552102 or 303701 ×1
  • Brick Sloped 75° 2 x 1 x 3 with Hollow Stud White Part 4460b Element 6552112 or 446001 ×1
  • Brick Sloped 75° 2 x 2 x 3 [Solid Studs] White Part 98560 Element 6552137 or 6004491 ×3
  • Brick Sloped Inverted 45° 2 x 1 White Part 3665 Element 6552106 or 366501 ×2

Tiles Special 37 pieces

  • Tile Special 2 x 2 Corner with Cut Corner - Facet Dark Blue Part 27263 Element 6166854 ×6
  • Tile Special 1 x 1 with Clip with Rounded Edges Dark Bluish Gray Part 15712 Element 6344022 or 6071226 ×6
  • Tile Special 1 x 2 with Handle Dark Bluish Gray Part 2432 Element 4211039 ×13
  • Tile Special 2 x 2 with Top Pin Dark Bluish Gray Part 2460 Element 4211129 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Flat Silver Part 2412b Element 4619636 ×10
  • Tile Special 1 x 2 with Handle Tan Part 2432 Element 6021208 or 4124457 ×1

Hinges, Arms and Turntables 28 pieces

  • Hinge Brick 2 x 2 Top Plate Thin Black Part 6134 Element 4124096 or 613426 ×3
  • Hinge Plate 1 x 8 Locking with Angled Side Extensions, Squared Plate Underside, 7 Teeth Black Part 14137 Element 6266348 or 6040336 ×2
  • Turntable 4 x 4 Square Base, Locking Black Part 61485 Element 4517986 ×1
  • Hinge Brick 1 x 2 Base Dark Bluish Gray Part 3937 Element 4211066 ×1
  • Hinge Plate 1 x 2 Locking with 1 Finger On Top Dark Bluish Gray Part 30383 Element 6265693 or 4210726 ×2
  • Hinge Brick 1 x 2 Base Light Bluish Gray Part 3937 Element 4211469 ×2
  • Turntable 2 x 2 Plate - Top Light Bluish Gray Part 3679 Element 4540203 or 4495467 ×5
  • Hinge Plate 1 x 2 Locking with 2 Fingers on Side, 9 Teeth Red Part 60471 Element 4515338 ×1
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] White Part 73983 Element 6102776 or 4287153 ×4
  • Turntable 2 x 2 Plate, Base White Part 3680 Element 368001 ×5
  • Turntable 4 x 4 Square Base, Locking White Part 61485 Element 6619301 or 4611927 ×2

Bricks Special 25 pieces

  • Brick Special 1 x 1 with Studs on 2 Sides Black Part 47905 Element 4214559 ×1
  • Bracket 3 x 2 x 1 1/3 with Pin Bottom Light Bluish Gray Part 18671 Element 6093054 ×1
  • Bracket 5 x 2 x 2 1/3 with Holes, Inside Stud Holder Light Bluish Gray Part 76766 Element 6171067 or 6012653 ×2
  • Brick Special 1 x 1 with Clip Horizontal Light Bluish Gray Part 60476 Element 6320306 or 4535764 ×1
  • Brick Special 1 x 14 Grooved Light Bluish Gray Part 4217 Element 6023978 or 4492172 ×2
  • Brick Special 1 x 2 with Grille Light Bluish Gray Part 2877 Element 4211383 ×1
  • Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] White Part 60475b Element 6321349 or 4533763 ×4
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×1
  • Brick Special 1 x 1 with Stud on 1 Side White Part 87087 Element 6550190 or 4558952 ×3
  • Brick Special 1 x 2 with Groove White Part 4216 Element 6619288 or 4264360 ×5
  • Brick Special 1 x 2 with Handle White Part 30236 Element 4140626 ×1
  • Brick Special 1 x 2 x 5 with Groove White Part 88393 Element 4582155 ×2
  • Brick Special 1 x 4 with 4 Studs on One Side White Part 30414 Element 6550167 or 4143254 ×1

Panels 20 pieces

  • Panel 1 x 2 x 1 [Rounded Corners] Dark Bluish Gray Part 4865b Element 6146225 ×3
  • Panel 2 x 2 x 1 Corner Tan Part 91501 Element 6181752 or 4593748 ×3
  • Panel 1 x 2 x 2 [Side Supports / Hollow Studs] Trans-Brown Part 87552 Element 6581810 or 6253217 ×6
  • Panel 1 x 2 x 3 [Side Supports / Hollow Studs] Trans-Brown Part 87544 Element 6507950 or 6239388 ×2
  • Panel 1 x 6 x 5 Trans-Brown Part 59349 Element 6245429 ×5
  • Panel 1 x 6 x 5 White Part 59349 Element 6550180 or 4504228 ×1

Projectiles / Launchers 19 pieces

  • Launcher, Plate Special 1 x 2 with Mini Blaster Black Part 15403 Element 6102734 ×6
  • Launcher, Weapon Rapid Shooter Six Barrel, 3 Fingers Black Part 18588 Element 6100104 ×1
  • Launcher Trigger, Weapon Gun Trigger Dark Bluish Gray Part 15392 Element 6051334 1 spare in the box ×6
  • Launcher, Brick Special 1 x 4 Spring Shooter with Light Bluish Gray Top Dark Bluish Gray Part 15400 Element 6324200 or 6048898 ×2
  • Launcher Trigger, Weapon Rapid Shooter, Flat Axle Hole Light Bluish Gray Part 18587 Element 6097090 ×1
  • Projectile, Spring Shooter Ammunition 8L Bar Trans-Dark Blue Part 15303 Element 6296379 or 6065898 ×3

Transportation - Land 19 pieces

  • Brick Special 2 x 4 with Wheels Holder, Single Slit with 2 x 2 Recessed and Hole Black Part 18892 Element 6097381 ×2
  • Grille Bar 1 x 4 x 1 2/3 Bull Bar, Rounded Black Part 35654 Element 6207258 ×1
  • Seat / Chair 2 x 2 with Center Sprue Mark Black Part 4079b Element 407926 ×3
  • Spoiler, Plate Special 1 x 2 Dark Blue Part 30925 Element 6187275 ×2
  • Spoiler 2 x 4 with Handle [Plain] Dark Bluish Gray Part 98834 Element 6124820 ×2
  • Vehicle Base 4 x 12 x 3/4 with 4 x 2 Recessed Center with Smooth Underside Dark Bluish Gray Part 52036 Element 4259673 ×1
  • Wheel Arch, Mudguard 4 x 2 1/2 x 1 Dark Bluish Gray Part 98282 Element 6170503 or 4646522 ×4
  • Engine / Air Scoop 2 x 2 Flat Silver Part 50943 Element 6076604 ×2
  • Steering Stand 1 x 2 with Black Steering Wheel Light Bluish Gray Part 3829c01 Element 4226995 ×1
  • Seat / Chair 2 x 2 with Center Sprue Mark Tan Part 4079b ×1

Bricks Curved 17 pieces

  • Brick Curved 2 x 2 x 2/3 Black Part 15068 Element 6053077 Also in Dark Blue ×2
  • Brick Curved 2 x 2 x 2/3 Dark Blue Part 15068 Element 6554196 or 6061569 Also in Black ×1
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Bluish Gray Part 11477 Element 6029948 ×2
  • Brick Curved 4 x 1 Double, No Studs Dark Bluish Gray Part 93273 Element 4648256 ×2
  • Brick Curved 2 x 2 x 2/3 Light Bluish Gray Part 15068 Element 6102357 ×9
  • Brick Curved Inverted 2 x 2 x 2/3 Light Bluish Gray Part 32803 Element 6185676 ×1

Bricks Round and Cones 13 pieces

  • Brick Round 1 x 1 Open Stud Dark Bluish Gray Part 3062b Element 4211090 ×1
  • Brick Round 2 x 2 with Axle Hole Dark Bluish Gray Part 3941 Element 4249139 ×2
  • Cone 1 x 1 [Top Groove] Dark Bluish Gray Part 59900 Element 4529240 ×1
  • Brick Round 1 x 1 Open Stud Orange Part 3062b Element 6220715 or 6039213 ×1
  • Brick Round 1 x 1 Open Stud Red Part 3062b Element 306221 ×1
  • Brick Round 2 x 2 with Axle Hole Tan Part 3941 Element 4125220 or 614305 ×1
  • Brick Round 1 x 1 Open Stud Trans-Light Blue Part 3062b Element 6514238 or 6238677 ×2
  • Cone 1 x 1 [Top Groove] Trans-Orange Part 59900 Element 6514017 or 6172233 ×2
  • Cone 4 x 4 x 2, Axle Hole [Plain] White Part 3943b Element 6108662 or 4288051 ×1
  • Cylinder Half 2 x 4 x 5 with 1 x 2 cutout White Part 85941 Element 6246885 or 4549276 ×1

Windows and Doors 13 pieces

  • Door 1 x 4 x 6 Smooth with Chamfered Handle Plinth Trans-Brown Part 60616b Element 6514120 or 6258835 ×2
  • Garage Roller Door Section without Handle Trans-Brown Part 4218 Element 6271643 or 6258833 ×8
  • Door Frame 1 x 4 x 6 Type 2 White Part 60596 Element 6262945 or 4541956 ×2
  • Garage Roller Door Section with Handle White Part 4219 Element 6532358 or 6280389 ×1

Bars, Ladders and Fences 12 pieces

  • Bar 1 x 6 [Closed Studs] Black Part 6140 Element 6415609 or 614026 ×1
  • Antenna 1 x 4 with Flat Top Light Bluish Gray Part 3957b Element 4211473 ×2
  • Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye Trans-Orange Part 58176 Element 6507868 or 6171764 1 spare in the box ×2
  • Bar 4L (Lightsaber Blade / Wand) Trans-Red Part 30374 Element 6507880 or 6167284 ×7

Technic Pins 12 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×6
  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×4
  • Technic Axle Towball Light Bluish Gray Part 2736 Element 6443149 or 4211375 ×1
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×1

Plates Wedged 11 pieces

  • Wedge Plate 4 x 2 Left Dark Bluish Gray Part 41770 Element 4210788 ×1
  • Wedge Plate 4 x 2 Right Dark Bluish Gray Part 41769 Element 4210782 ×1
  • Wedge Plate 6 x 6 Cut Corner Light Bluish Gray Part 6106 Element 4211520 ×1
  • Wedge Plate 6 x 6 Cut Corner White Part 6106 Element 6107667 or 610601 ×2
  • Wedge Plate 8 x 3, 22° Left White Part 50305 Element 4256097 ×3
  • Wedge Plate 8 x 3, 22° Right White Part 50304 Element 4256095 ×3

Tiles Round and Curved 9 pieces

  • Tile Round 2 x 2 with 'A' Avengers Symbol Print Dark Bluish Gray Part 14769pr1131 Element 6258005 ×2
  • Tile Round 1 x 1 Trans-Red Part 98138 Element 6514189 or 6258607 1 spare in the box ×5
  • Tile Round 1 x 1 Trans-Yellow Part 98138 Element 6514193 or 6274740 1 spare in the box ×2

Energy Effects 8 pieces

  • Wave / Power Blast Rounded Energy with Bar Handle Trans-Light Blue Part 27393 Element 6581317 or 6353237 ×2
  • Wave / Power Burst / Flame, Bolt Large with Bar Ends Trans-Orange Part 35032b ×2
  • Wave / Power Burst / Flame, Bolt Small with Bar Ends Trans-Orange Part 35032c ×2
  • Wave / Power Burst / Flame, Shield Large with Bar End Trans-Orange Part 35032e ×1
  • Wave / Power Burst / Flame, Shield Small with Bar Ends Trans-Orange Part 35032f ×1

Technic Axles 8 pieces

  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×6
  • Technic Axle 4 Red Part 3705 Element 6129995 or 4265797 ×1

Technic Connectors 8 pieces

  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×3
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×1
  • Technic Pin Connector Hub with 1 Axle Dark Bluish Gray Part 22961 Element 6135014 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Yellow Part 59443 Element 4519010 ×3

Wheels and Tyres 8 pieces

  • Tyre 24 x 12 R Balloon Black Part 56890 Element 6162541 or 4498340 ×4
  • Wheel 11 x 12 with Hole Notched for Wheels Holder Pin Light Bluish Gray Part 6014b Element 4211764 ×4

Minifig Shields, Weapons, & Tools 7 pieces

  • Tool Crowbar Black Part 92585 Element 6186698 ×1
  • Weapon Gun Automatic Pistol Medium Barrel Black Part 62885 Element 6103643 or 6052829 1 spare in the box ×1
  • Tool Circular Saw Dark Bluish Gray Part 30194 Element 4211080 ×1
  • Tool Welding Gun Dark Bluish Gray Part 13793 Element 6510473 or 6116470 ×1
  • Weapon Gun / Pistol Two Barrel, 10 Ribs Dark Bluish Gray Part 95199 Element 4623236 ×1
  • Tool Screwdriver and Spanner / Wrench Flat Silver Part 4006 Element 6167576 ×1
  • Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] Flat Silver Part 21459 Element 6116593 1 spare in the box ×1

Minifig Accessories 6 pieces

  • Tap 1 x 1 without Hole in Spout Red Part 4599b Element 459921 1 spare in the box ×1
  • Equipment Bottle Trans-Clear Part 95228 Element 6507876 or 6247369 ×1
  • Equipment Cup / Mug [Plain] Trans-Clear Part 3899 Element 6514013 or 6238856 ×3
  • Book Cover [Plain] White Part 24093 Element 6233538 or 6214257 ×1

Bricks Wedged 4 pieces

  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Dark Blue Part 29120 Element 6214811 ×1
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Dark Blue Part 29119 Element 6214812 ×1
  • Brick Wedged, Sloped 4 x 2 Triple Left Dark Bluish Gray Part 43710 Element 4210866 ×1
  • Brick Wedged, Sloped 4 x 2 Triple Right Dark Bluish Gray Part 43711 Element 4210867 ×1

Flags, Banners and Signs 4 pieces

  • Flag 2 x 2 Trapezoid with Flat Area between Clips Dark Bluish Gray Part 44676 Element 4215387 ×4

Technic Bricks 3 pieces

  • Technic Brick 1 x 1 with Pin Hole Dark Bluish Gray Part 6541 Element 4210639 ×1
  • Technic Brick 1 x 2 [2 Pin Holes] White Part 32000 Element 6564911 or 3200001 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin White Part 32064a Element 6548286 or 6178921 ×1

Rock 2 pieces

  • Infinity Stone Trans-Bright Green Part 36451a 3 spares in the box ×1
  • Infinity Stone Trans-Purple Part 36451a 3 spares in the box ×1

Supports, Girders and Cranes 2 pieces

  • Support 2 x 2 x 10 Girder Triangular Vertical - Type 4 - 3 Posts, 3 Sections Light Bluish Gray Part 95347 Element 6186292 ×2

Transportation - Sea and Air 2 pieces

  • Propeller 4 Blade 5 Diameter with Rounded Ends, Open Hub Black Part 2479 Element 247926 ×1
  • Helicopter Skid Rails 12 x 6 Dark Blue Part 30248 Element 6259803 or 6137496 ×1

Windscreens and Fuselage 2 pieces

  • Windscreen 3 x 4 x 1 1/3 Large Glass Surface Trans-Brown Part 57783 Element 6507931 or 6247359 ×1
  • Windscreen 6 x 2 x 2 with Handle Trans-Brown Part 92474 Element 6431834 or 6258836 ×1

Minifig Upper Body 1 piece

  • Hand Left, Glove, Infinity Gauntlet Pearl Gold Part 36470 Element 6376572 or 6215355 ×1

Minifigs 1 piece

  • Minifig Trophy Statuette, Ant-Man with Red and Silver Details Print White Part 90398pr0049 Element 6262524 1 spare in the box ×1

Stickers 1 piece

  • Sticker Sheet for Set 76131-1 [No Color/Any Color] Part 49542 Element 6262111 ×1

Technic Beams 1 piece

  • Technic Beam 1 x 5 Thick Light Bluish Gray Part 32316 Element 4211651 ×1

Tools 1 piece

  • Brick and Axle Separator v2.0 Dark Turquoise Part 96874 Element 6254100 ×1

Minifigures 6 figures

  • Outrider Minifigure, checked as a whole figure ×1
  • Nebula, White Advanced Tech (Quantum) Suit Minifigure, checked as a whole figure ×1
  • Hulk (Big Fig), Black Hair, Dark Blue Pants Minifigure, checked as a whole figure ×1
  • Thanos with Gold Armor on Arms (Big Fig) Minifigure, checked as a whole figure ×1
  • Captain Marvel with Medium Nougat Hair Minifigure, checked as a whole figure ×1
  • Iron Man Mark 85 Armor, Pearl Gold Arms, Rounded Helmet Minifigure, checked as a whole figure ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.

Request a replacement from LEGO

Buy the piece

Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.

Keep a record

Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.

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