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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.

Checking

7692 MX-71 Recon Dropship

417 pieces in 155 part and color combinations, plus 6 minifigures.

The official piece count includes the 18 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.

Every bag and the box. Shake out each bag, check its corners and seams, and look inside the empty box.
Inside what you have built. Small pieces lodge inside tubes, under plates and between studs. Turn the model over and look.
The last few steps. Compare each recent step with its parts callout. A piece used in the wrong place earlier leaves you one short later.
Look-alike colors. 1 part in this set come in two colors that are easy to mix up; they are listed below.
The spare pieces. This set comes with 14 spare pieces, marked on each row of the checklist. One may be the piece you need.
The floor and your building area. Check under furniture, the chair and the edges of your building surface.

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.

Plate 2 x 6 Black ×6 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.

Piece checklist

Technic Pins 64 pieces

Technic Pin Double with Axle Hole Black Part 32138 Element 4130597 or 4119589 ×2
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×2
Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 3 spares in the box ×23
Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×7
Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 3 spares in the box ×14
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×4
Technic Pin Long without Friction Ridges - Single Slot Light Bluish Gray Part 32556a Element 4211709 ×3
Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 2 spares in the box ×8
Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1

Bricks Round and Cones 27 pieces

Brick Round Corner 10 x 10 with Slope 33° Edge, Axle Hole, Facet Cutout Black Part 58846 Element 6454174 or 6015466 ×2
Brick Round 2 x 2 with Axle Hole Blue Part 3941 Element 614373 or 614323 ×2
Cone 1 x 1 [No Top Groove] Trans-Dark Blue Part 4589 Element 618843 ×14
Brick Round 2 x 2 with Axle Hole Trans-Neon Green Part 3941 Element 6273157 or 611649 ×2
Cone 1 x 1 [No Top Groove] Trans-Neon Green Part 4589 Element 618849 or 458949 ×3
Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 ×4

Plates Round Curved and Dishes 23 pieces

Dish 3 x 3 Inverted [Radar] Black Part 43898 Element 4180087 ×6
Plate Round 1 x 1 with Solid Stud Dark Bluish Gray Part 6141 Element 4210633 1 spare in the box ×2
Plate Round Corner 3 x 3 Dark Bluish Gray Part 30357 Element 4212075 ×2
Plate Round Corner 4 x 4 Lime Part 30565 Element 4504705 ×2
Dish 2 x 2 Inverted [Radar] Trans-Dark Blue Part 4740 Element 6580383 or 6398233 ×3
Plate Round 1 x 1 with Solid Stud Trans-Dark Blue Part 6141 Element 6514055 or 6240214 1 spare in the box ×6
Dish 4 x 4 Inverted [Radar] White Part 3960 Element 396001 ×2

Bricks Curved 22 pieces

Brick Curved 2 x 2 No Studs - 3 Recessed Side Ports Black Part 44675 Element 6021752 or 4185272 ×2
Brick Curved Inverted 6 x 1 Black Part 42023 Element 6112323 or 4160409 ×4
Brick Curved 2 x 2 No Studs - 3 Recessed Side Ports Light Bluish Gray Part 44675 Element 4213383 ×2
Brick Arch 1 x 6 x 2 Curved Top White Part 6183 Element 6552159 or 6132772 ×1
Brick Curved 1 x 2 x 1 1/3 with Curved Top White Part 6091 Element 6285777 or 609101 ×2
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End White Part 47457 Element 4494474 ×1
Brick Curved 3 x 1 No Studs White Part 50950 Element 6548268 or 4249112 ×8
Brick Curved 6 x 1 White Part 42022 Element 4160387 ×2

Bricks Sloped 16 pieces

Brick Sloped 33° 3 x 2 Black Part 3298 Element 329826 ×1
Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×3
Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Black Part 3747b Element 4500458 or 374726 ×1
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Orange Part 54200 Element 4504371 or 4248195 ×6
Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×2
Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin White Part 3747b Element 4500469 ×3

Plates Special 15 pieces

Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×1
Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×2
Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Black Part 2444 Element 244426 ×2
Technic Plate 2 x 6 [5 Holes] Black Part 32001 Element 3200126 ×2
Plate Special 2 x 2 with Grills Light Bluish Gray Part 41862 Element 4211748 ×2
Technic Plate 2 x 4 [3 Holes] Light Bluish Gray Part 3709 Element 4211444 ×4
Plate Special 2 x 2 with Bar Frame Octagonal White Part 30033 Element 3003301 ×2

Tiles Special 14 pieces

Tile Special 1 x 1 with Clip and Straight Tips Black Part 2555 Element 255526 ×2
Tile Special 1 x 2 Grille with Bottom Groove Orange Part 2412b Element 4125254 or 3933106 ×12

Bars, Ladders and Fences 13 pieces

Bar 1 x 4 x 2 Black Part 6187 Element 4141349 or 4121537 ×1
Lever Small Base with Black Lever Blue Part 298c02 Element 4296152 or 4163988 1 spare in the box ×2
Bar 1L with Clip Dark Bluish Gray Part 48729a Element 4222196 ×6
Antenna 1 x 4 with Rounded Top Trans-Neon Green Part 3957a ×4

Bricks 13 pieces

Brick 1 x 2 Black Part 3004 Element 300426 ×2
Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×1
Brick 2 x 6 Black Part 2456 Element 4181144 or 245626 ×1
Brick 2 x 4 Dark Bluish Gray Part 3001 Element 4211085 ×2
Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×1
Brick 2 x 3 Light Bluish Gray Part 3002 Element 4211386 ×1
Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×2
Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×3

Technic Axles 13 pieces

Technic Axle 10 Black Part 3737 Element 373726 ×1
Technic Axle 4 Black Part 3705 Element 370526 ×2
Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×2
Technic Axle 2 Notched Red Part 32062 Element 4142865 ×8

Hinges, Arms and Turntables 12 pieces

Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×2
Hinge Brick 2 x 2 Locking with 1 Finger Vertical and Axle Hole [X Opening] Black Part 30389c Element 4163904 or 4162759 ×2
Hinge Brick 2 x 2 Top Plate Thin Black Part 6134 Element 4124096 or 613426 ×2
Hinge Brick 1 x 2 Top Plate Thin Light Bluish Gray Part 3938 Element 4211470 ×2
Hinge Brick 2 x 2 Locking with 2 Fingers Vertical and Axle Hole, 9 Teeth Light Bluish Gray Part 40902 Element 6093870 or 4215971 ×2
Hinge Brick 1 x 2 Base White Part 3937 Element 6619287 or 393701 ×2

Technic Beams 8 pieces

Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×2
Technic Beam 1 x 5 Thick White Part 32316 Element 4249021 or 4140465 ×2
Technic Beam 1 x 7 Thick White Part 32524 Element 6564912 or 6318056 ×4

Technic Bushes 6 pieces

Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 2 spares in the box ×5
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×1

Wheels and Tyres 6 pieces

Wheel Hard Plastic Small (22mm D. x 24mm) Orange Part 6118 Element 4505861 ×6

Minifig Accessories 5 pieces

Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Black Part 4349 Element 434926 ×2
Tap 1 x 1 with Hole in Spout Black Part 4599a ×1
Equipment Martian Hypersled with Pin (Mars Mission) White Part 58843 Element 4501924 ×2

Rock 5 pieces

Rock 1 x 1 Jewel / Gem 24 Facet Trans-Neon Green Part 30153 Element 6247790 or 4114505 ×5

Technic Special 5 pieces

Technic Brick Special 2 x 2 with Ball Socket Reinforced and Axle Hole Dark Bluish Gray Part 62712 Element 4524353 or 4497254 ×1
Technic Brick Special 2 x 2 with Solid Ball and Axle Hole Dark Bluish Gray Part 57909a ×1
Technic Plate Rotor 3 Blade with Smooth Ends and 6 Studs (Propeller) Light Bluish Gray Part 32125 Element 4262978 or 4211842 ×1
Cylinder 9 x 4 x 2 Tapered with Flat Bottom, Pin Holes Trans-Orange Part 58947 Element 4502233 ×2

Minifig Shields, Weapons, & Tools 4 pieces

Weapon Lance Black Part 3849 Element 6345264 or 384926 ×2
Weapon Lightsaber Hilt with Bottom Ring Light Bluish Gray Part 64567 Element 4581155 or 4539481 ×2

Transportation - Sea and Air 4 pieces

Engine, Large Light Bluish Gray Part 43121 Element 4211767 ×2
Tail Shuttle White Part 6239 Element 623901 ×2

Tubes and Hoses 4 pieces

Hose, Ribbed 7mm D. 10L / 8.0cm Lime Part 78c10 Element 4508469 ×2
Flexible Ribbed Hose 8mm Ends 19L Orange Part 57539 Element 4561469 or 4508092 ×2

Bricks Special 3 pieces

Bracket 5 x 2 x 2 1/3 with Holes, Smooth Bottom Black Part 6087 Element 4100423 or 608726 ×1
Brick Special 1 x 1 with Headlight Blue Part 4070 Element 407023 ×2

Tiles Round and Curved 3 pieces

Tile Round 2 x 2 with Bottom Cross Black Part 4150 Element 415076 or 415026 ×3

Transportation - Land 3 pieces

Mudguard 2 x 4 with Molded Headlights Orange Part 44674 Element 4195376 ×1
Wheel Arch, Curved Wedge 4 x 3 with 2 x 2 Opening and 4 Studs Orange Part 47755 Element 6063272 or 4500337 ×2

Projectiles / Launchers 2 pieces

Launcher, Technic Competition Cannon Flat Bottom [Complete Assembly] Black Part 57796 Element 4518409 or 4499434 ×1
Projectile, Technic Competition Arrow, Liftarm Shaft with Hollow Black Rubber End Light Bluish Gray Part 57028c01 Element 4299625 ×1

Windscreens and Fuselage 2 pieces

Windscreen 10 x 6 x 2 Curved Trans-Orange Part 45705 Element 6507926 or 6386002 ×1
Windscreen 7 x 4 x 2 Round Trans-Orange Part 30384 Element 4504623 ×1

Large Buildable Figures 1 piece

Large Figure Weapon Spear, Drill with Axle and Hole Black Part 40340 Element 4507190 or 4227078 ×1

Stickers 1 piece

Sticker Sheet for Set 7692-1 [No Color/Any Color] Part 59622 Element 4506055 ×1

Technic Gears 1 piece

Technic Worm Gear Black Part 4716 Element 6037533 or 471626 ×1

Tiles 1 piece

Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×1

Minifigures 6 figures

Martian Minifigure, checked as a whole figure ×4
Mars Astronaut, Sunglasses Minifigure, checked as a whole figure ×1
Mars Astronaut, Stubble, Printed Hair 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.