Free tool

LEGO Missing Piece Checker

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.

War Machine Buster

Checking

76124 War Machine Buster

340 pieces in 109 part and color combinations, plus 4 minifigures.

The official piece count includes the 22 parts inside the set's minifigures, which this inventory lists separately. 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.

Show

Piece checklist

Dark Bluish Gray 139 pieces

  • Bracket 1 x 2 - 1 x 2 Inverted Dark Bluish Gray Part 99780 Element 6000606 ×5
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Dark Bluish Gray Part 6091 Element 6411327 or 4210797 ×4
  • Brick Curved 2 x 2 x 2/3 Dark Bluish Gray Part 15068 Element 6071261 ×21
  • Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Dark Bluish Gray Part 47457 Element 4218696 ×3
  • Brick Curved Inverted 2 x 1 Dark Bluish Gray Part 24201 Element 6215212 ×2
  • Brick Round 1 x 1 Open Stud Dark Bluish Gray Part 3062b Element 4211090 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Dark Bluish Gray Part 85984 Element 4567887 ×5
  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Dark Bluish Gray Part 15672 Element 6069164 or 4621917 ×4
  • Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud Dark Bluish Gray Part 28192 Element 6168776 ×8
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Bluish Gray Part 3660 Element 4211000 ×2
  • Brick Sloped Inverted 45° 3 x 1 Double with 2 Blocked Open Studs Dark Bluish Gray Part 18759 Element 6100124 ×1
  • Brick Sloped Inverted 45° 4 x 1 Double with 1 x 2 Recessed Dark Bluish Gray Part 32802 Element 6185675 ×2
  • Brick Special 1 x 2 with Grille Dark Bluish Gray Part 2877 Element 4210636 ×3
  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Dark Bluish Gray Part 29120 Element 6204668 ×3
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Dark Bluish Gray Part 29119 Element 6204667 ×3
  • Brick Wedged, Sloped Inverted 4 x 4 Triple [4 Connections between Front Studs] Dark Bluish Gray Part 13349 Element 6079036 ×1
  • Launcher Trigger, Weapon Gun Trigger Dark Bluish Gray Part 15392 Element 6051334 1 spare in the box ×2
  • Launcher, Weapon Rapid Shooter Six Barrel, 3 Fingers Dark Bluish Gray Part 18588 Element 6100488 ×1
  • Plate 1 x 1 Dark Bluish Gray Part 3024 Element 4210719 1 spare in the box ×2
  • Plate 1 x 3 Dark Bluish Gray Part 3623 Element 4211133 ×2
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×1
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×7
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Dark Bluish Gray Part 60897 Element 6489464 or 6296892 ×4
  • Plate Special 1 x 2 [Side Handle Closed Ends] Dark Bluish Gray Part 48336 Element 6146321 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Dark Bluish Gray Part 15573 Element 6092572 ×10
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×2
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Dark Bluish Gray Part 60478 Element 4521187 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Bluish Gray Part 87580 Element 6126083 or 4565322 ×1
  • Plate Special 3 x 2 with Rounded End, Hole Dark Bluish Gray Part 3176 Element 4225733 ×6
  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×1
  • Technic Brick 1 x 2 [2 Pin Holes] Dark Bluish Gray Part 32000 Element 4210762 ×2
  • Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole Dark Bluish Gray Part 92013 Element 4619760 Also in Black ×2
  • Technic Brick Special 2 x 2 with Ball and Axle Hole, with 6 Holes in Ball Dark Bluish Gray Part 57909b Element 4497253 ×4
  • Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Vertical Side] Dark Bluish Gray Part 48171 Element 6492115 or 6343337 ×2
  • Tile Special 1 x 1 with Clip with Rounded Edges Dark Bluish Gray Part 15712 Element 6344022 or 6071226 ×2
  • Tile Special 2 x 2 Inverted Dark Bluish Gray Part 11203 Element 6013082 ×2
  • Tile Special Round 2 x 2 with Hole Dark Bluish Gray Part 15535 Element 6055313 ×1
  • Wedge Plate 2 x 2 Left Dark Bluish Gray Part 24299 Element 6143423 ×1
  • Wedge Plate 2 x 2 Right Dark Bluish Gray Part 24307 Element 6143417 ×1
  • Wedge Plate 2 x 4 Dark Bluish Gray Part 51739 Element 4527082 ×1
  • Wedge Plate 3 x 3 Cut Corner Dark Bluish Gray Part 2450 Element 4210897 ×2
  • Wheel Arch, Curved Wedge 4 x 3 with 2 x 2 Opening and 4 Studs Dark Bluish Gray Part 47755 Element 4294289 ×4
  • Windscreen 4 x 4 x 1 2/3 Canopy Half Sphere with Handle and Silver War Machine Face Print Dark Bluish Gray Part 18990pr0003 Element 6261624 ×1

Light Bluish Gray 86 pieces

  • Arm Mechanical with 2 Clips [Battle Droid] Light Bluish Gray Part 30377 Element 6319333 or 4211658 1 spare in the box ×2
  • Bracket 1 x 2 - 1 x 4 [Rounded Corners] Light Bluish Gray Part 10201 Element 6014615 ×2
  • Bracket 1 x 2 - 2 x 2 Inverted Light Bluish Gray Part 99207 Element 4654580 ×10
  • Bracket 5 x 2 x 1 1/3 with Holes, Pin Bottom Light Bluish Gray Part 11215 Element 6028811 ×2
  • Brick 1 x 4 Light Bluish Gray Part 3010 Element 4211394 ×1
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Light Bluish Gray Part 11477 Element 6028813 ×2
  • Brick Curved Inverted 2 x 2 x 2/3 Light Bluish Gray Part 32803 Element 6185676 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Light Bluish Gray Part 54200 Element 4521921 or 4244372 1 spare in the box ×3
  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Light Bluish Gray Part 15672 Element 6093859 ×1
  • Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud Light Bluish Gray Part 28192 Element 6213378 ×2
  • Brick Wedged 2 x 2 Facet Light Bluish Gray Part 87620 Element 4651063 ×2
  • Brick Wedged, Sloped 45° 2 x 2 Corner Light Bluish Gray Part 13548 Element 6034676 ×2
  • Hinge Brick 1 x 2 Base Light Bluish Gray Part 3937 Element 4211469 ×2
  • Hinge Brick 2 x 2 Top Plate Thin Light Bluish Gray Part 6134 Element 4211881 ×2
  • Large Figure Armor Plate, Small Light Bluish Gray Part 28220 Element 6168742 ×2
  • Launcher Trigger, Weapon Rapid Shooter, Flat Axle Hole Light Bluish Gray Part 18587 Element 6097090 ×1
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×5
  • Plate 2 x 2 Corner Light Bluish Gray Part 2420 Element 4211353 ×2
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×3
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Bluish Gray Part 4032a Element 4211475 ×3
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Light Bluish Gray Part 2654 Element 4278273 or 4276273 ×2
  • Plate Special 1 x 2 5.9mm Centre Side Towball Socket Light Bluish Gray Part 14704 Element 6414561 or 6338165 ×1
  • Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×3
  • Plate Special 1 x 2 Side Handle [Free Ends] Light Bluish Gray Part 2540 Element 4211632 ×2
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Light Bluish Gray Part 60478 Element 4515369 ×6
  • Plate Special 1 x 2, Top Clip [Split] Light Bluish Gray Part 92280 Element 4598526 ×8
  • Plate Special 2 x 2 with Wheel Holders Light Bluish Gray Part 4600 Element 4211504 ×2
  • Technic Brick 1 x 1 with Pin Hole Light Bluish Gray Part 6541 Element 4211535 ×3
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Light Bluish Gray Part 32064a Element 6206249 or 4233493 ×2
  • Technic Driving Ring Connector Smooth [4 rounded side walls] Light Bluish Gray Part 26287 Element 6196757 ×2
  • Technic Pin 1/2 with 2L Bar Extension Light Bluish Gray Part 61184 Element 6347715 or 4520320 ×2
  • Wheel 18 x 8 with Fake Bolts and Deep Spokes with Inner Ring Light Bluish Gray Part 13971 Element 6359807 or 6044729 ×2

Trans-Red 36 pieces

  • Brick 1 x 2 without Bottom Tube Trans-Red Part 3065 Element 6514263 or 6244905 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Red Part 54200 Element 6245252 or 4244363 1 spare in the box ×2
  • Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye Trans-Red Part 58176 Element 6507867 or 6171762 1 spare in the box ×2
  • Plate 1 x 2 Trans-Red Part 3023 Element 6514003 or 6240212 ×8
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×16
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Red Part 2654 Element 6581776 or 6254635 ×3
  • Tile 1 x 1 with Groove Trans-Red Part 3070b Element 6581817 or 6254248 1 spare in the box ×1

Pearl Titanium 21 pieces

  • Arm Mechanical with Clip [Thick Support] Pearl Titanium Part 98313 Element 6276869 or 6008484 ×8
  • Technic Pin Connector Round [Slotted] Pearl Titanium Part 62462 Element 6245501 or 6167943 ×2
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Pearl Titanium Part 99563 Element 6208447 ×11

Red 19 pieces

  • Bracket 1 x 2 - 2 x 2 Red Part 44728 Element 6117974 or 6048856 ×4
  • Brick Round 2 x 2 [Grill] Red Part 92947 Element 4650646 or 4612108 ×1
  • Plate 1 x 4 Red Part 3710 Element 371021 ×3
  • Plate 2 x 3 Red Part 3021 Element 302121 ×4
  • Plate Special 1 x 2 Rounded with 2 Open Studs Red Part 35480 Element 6210269 ×4
  • Plate Special 1 x 2 [Side Handle Closed Ends] Red Part 48336 Element 4226876 ×1
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Red Part 11214 Element 6209519 ×2

Black 18 pieces

  • Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×2
  • Panel 1 x 2 x 1 with Rounded Corners and Central Divider Black Part 93095 Element 6640376 or 6115086 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×4
  • Plate Special 1 x 2 with Clip Horizontal on End Black Part 63868 Element 6336989 or 4535739 ×1
  • Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole Black Part 92013 Element 4619763 Also in Dark Bluish Gray ×2
  • Technic Brick Special 2 x 2 with Pin Hole, with 2 Rotation Joint Sockets Black Part 48172 Element 6296186 or 4275826 ×1
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×2
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×2
  • Technic Plate 2 x 6 [5 Holes] Black Part 32001 Element 3200126 ×1
  • Technic Rotation Joint Ball Loop with Two Perpendicular Pins with Friction Black Part 47455 Element 4272426 or 4213374 ×2

Flat Silver 13 pieces

  • Launcher, Weapon Gun / Blaster / Shooter Mini Flat Silver Part 15391 Element 6195518 ×2
  • Plate Round 1 x 1 with Solid Stud Flat Silver Part 6141 Element 4633691 1 spare in the box ×8
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Flat Silver Part 99563 Element 6208446 ×3

Blue 4 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×4

Pearl Gold 2 pieces

  • Weapon Bladed Claw Spread Pearl Gold Part 10187 Element 6241936 1 spare in the box ×2

Dark Brown 1 piece

  • Hair Short, Tousled with Side Part Dark Brown Part 62810 Element 4535553 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 76124-1 [No Color/Any Color] Part 49539 Element 6261720 ×1

Minifigures 4 figures

  • Outrider Minifigure, checked as a whole figure ×1
  • Outrider with Shoulder Armor Minifigure, checked as a whole figure ×1
  • Ant-Man (Scott Lang), White Advanced Tech (Quantum) Suit Minifigure, checked as a whole figure ×1
  • War Machine, White Advanced Tech (Quantum) Suit 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.