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.
4,045 pieces in 558 part and color combinations, plus 1 minifigure.
The official piece count includes the 4 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.
Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / GrateFlat Silver ×8Dark Bluish Gray ×4Flat Silver is lighter than Dark Bluish Gray.
Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]Flat Silver ×2Dark Bluish Gray ×6Flat Silver is lighter than Dark Bluish Gray.
Bracket 1 x 2 - 1 x 2 InvertedDark Tan ×2Tan ×2Dark Tan is darker than Tan.
Brick 1 x 2Tan ×2Dark Tan ×4Tan is lighter than Dark Tan.
Plate 1 x 2Dark Tan ×52Tan ×12Dark Tan is darker than Tan.
Plate 1 x 4Dark Tan ×4Tan ×2Dark Tan is darker than Tan.
32 more look-alike pairs
Plate 1 x 6Dark Tan ×6Tan ×5Dark Tan is darker than Tan.
Plate 2 x 2 CornerTan ×6Dark Tan ×12Tan is lighter than Dark Tan.
Plate 2 x 3Tan ×2Dark Tan ×6Tan is lighter than Dark Tan.
Plate 2 x 4Dark Tan ×10Tan ×2Dark Tan is darker than Tan.
Plate Special 1 x 2 with Clip Horizontal on EndDark Tan ×12Tan ×4Dark Tan is darker than Tan.
Bracket 1 x 2 - 2 x 2 InvertedBlack ×7Dark Bluish Gray ×10Black is darker than Dark Bluish Gray.
Brick 1 x 2Dark Bluish Gray ×6Black ×2Dark Bluish Gray is lighter than Black.
Brick 2 x 2Dark Bluish Gray ×2Black ×4Dark Bluish Gray is lighter than Black.
Brick 2 x 4Dark Bluish Gray ×2Black ×6Dark Bluish Gray is lighter than Black.
Brick Curved Inverted 2 x 1Black ×2Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Brick Sloped 30° 1 x 2 x 2/3Dark Bluish Gray ×2Black ×2Dark Bluish Gray is lighter than Black.
Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version]Black ×4Dark Bluish Gray ×12Black is darker than Dark Bluish Gray.
Brick Special 1 x 2 with 2 Studs on 1 SideBlack ×6Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 10Black ×1Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 2Black ×1Dark Bluish Gray ×12Black is darker than Dark Bluish Gray.
Plate 1 x 3Dark Bluish Gray ×6Black ×2Dark Bluish Gray is lighter than Black.
Plate 1 x 4Dark Bluish Gray ×19Black ×1Dark Bluish Gray is lighter than Black.
Plate 1 x 6Dark Bluish Gray ×10Black ×1Dark Bluish Gray is lighter than Black.
Plate 2 x 4Black ×1Dark Bluish Gray ×22Black is darker than Dark Bluish Gray.
Plate 2 x 6Black ×3Dark Bluish Gray ×9Black is darker than Dark Bluish Gray.
Plate 4 x 4Black ×7Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Dark Bluish Gray ×14Black ×10Dark Bluish Gray is lighter than Black.
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Black ×4Dark Bluish Gray ×14Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 Side Handle [Free Ends]Dark Bluish Gray ×4Black ×4Dark Bluish Gray is lighter than Black.
Plate Special 2 x 2 with Only 2 studsDark Bluish Gray ×12Black ×5Dark Bluish Gray is lighter than Black.
Technic Brick 1 x 2 [1 Pin Hole]Black ×6Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom PinDark Bluish Gray ×2Black ×4Dark Bluish Gray is lighter than Black.
Technic Brick 1 x 4 [3 Pin Holes]Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Pin Connector Hub with 1 AxleDark Bluish Gray ×4Black ×3Dark Bluish Gray is lighter than Black.
Technic Pin Connector Round 1L [Beam]Dark Bluish Gray ×6Black ×2Dark Bluish Gray is lighter than Black.
Technic Plate 2 x 4 [3 Holes]Black ×8Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Tile 2 x 3Dark Bluish Gray ×8Black ×2Dark Bluish Gray is lighter than Black.
Tool Screwdriver and Spanner / WrenchFlat SilverPart 4006Element 6167576×1
Pneumatics
2 pieces
Pneumatic Hose Connector with Axle ConnectorDark Bluish GrayPart 99021Element 6265669 or 6020189×2
Stickers
1 piece
Sticker Sheet for Set 76210-1[No Color/Any Color]Part 10068837Element 6316589×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Minifigures
1 figure
Tony Stark Transforming into Iron Man, Dark Bluish Grey TorsoMinifigure, 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.
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.