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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.

Chaos Catapult

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70311 Chaos Catapult

83 pieces in 42 part and color combinations, plus 2 minifigures.

The official piece count includes the 10 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.

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Piece checklist

Plates Special 12 pieces

  • Bracket 1 x 2 - 2 x 2 Black Part 44728 Element 6117973 or 6048855 ×2
  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Black Part 15573 Element 6092585 ×1
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Black Part 60470b Element 6310268 or 4556158 ×1
  • Plate Special 2 x 2 with Wheels Holder Wide - Technic Pins Black Part 47720 Element 6354604 or 4217725 ×1
  • Plate Special 2 x 2 with 2 Pins Dark Bluish Gray Part 15092 Element 6284702 or 6066952 ×1
  • Bracket 1 x 2 - 2 x 2 Inverted Light Bluish Gray Part 99207 Element 4654580 ×2
  • Plate Special 1 x 1 with Tooth White Part 49668 Element 6601935 or 4224792 ×2
  • Plate Special 1 x 2 with Three Teeth [Tri-Tooth] White Part 15208 Element 6046381 ×1

Plates 10 pieces

  • Plate 1 x 6 Black Part 3666 Element 366626 ×4
  • Plate 2 x 6 Black Part 3795 Element 379526 ×1
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×2
  • Plate 1 x 3 Reddish Brown Part 3623 Element 4211152 ×2
  • Plate 1 x 4 Reddish Brown Part 3710 Element 4211190 ×1

Bricks Curved 7 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Brown Part 11477 Element 6046943 ×4
  • Brick Curved 2 x 2 x 2/3 Dark Brown Part 15068 Element 6047037 ×1
  • Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Dark Brown Part 47457 Element 6046939 ×2

Bricks Sloped 6 pieces

  • Brick Sloped 65° 2 x 1 x 2 Dark Brown Part 60481 Element 4624089 ×4
  • Brick Sloped 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid] Pearl Gold Part 22388 Element 6129416 1 spare in the box ×2

Plates Round Curved and Dishes 6 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Brown Part 4032a Element 4623298 ×4
  • Plate Round 1 x 1 with Solid Stud Orange Part 6141 Element 4157103 1 spare in the box ×2

Technic Pins 6 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×6

Technic Connectors 5 pieces

  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×4
  • Technic Axle and Pin Connector Perpendicular Double 4L Light Bluish Gray Part 98989 Element 6308440 or 4652234 ×1

Animal / Creature Body Parts 4 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Red Part 53451 Element 6270107 or 4568388 1 spare in the box ×2
  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small White Part 53451 Element 6270106 or 4568387 1 spare in the box ×2

Technic Bricks 4 pieces

  • Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×2

Technic Special 4 pieces

  • Technic Disc 3 x 3 Black Part 2723 Element 4218868 or 4121619 ×4

Bricks Round and Cones 2 pieces

  • Brick Round 2 x 2 with Axle Hole Trans-Orange Part 3941 Element 6514283 or 6273154 ×2

Bricks Special 2 pieces

  • Brick Special 1 x 4 with 4 Studs on One Side Black Part 30414 Element 4162443 ×1
  • Brick Special 1 x 4 Palisade [aka Log] Reddish Brown Part 30137 Element 4211181 ×1

Bricks Wedged 2 pieces

  • Brick Wedged, Sloped 4 x 4 Fractured Polygon Top Trans-Orange Part 64867 Element 6507894 or 6466641 ×2

Projectiles / Launchers 2 pieces

  • Launcher, Weapon Crossbow Shooter Black Part 20105 Element 6282071 or 6117858 ×1
  • Launcher Trigger, Weapon Gun Trigger Dark Bluish Gray Part 15392 Element 6051334 1 spare in the box ×1

Technic Axles 2 pieces

  • Technic Axle 6 Black Part 3706 Element 370626 ×2

Technic Beams 2 pieces

  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×2

Tiles Round and Curved 2 pieces

  • Tile Round 1 x 1 Trans-Orange Part 98138 Element 6514197 or 6274747 1 spare in the box ×2

Tiles Special 2 pieces

  • Tile Special 1 x 2 with Two Vertical Teeth / Tooth White Part 15209 Element 6046384 ×2

Minifig Shields, Weapons, & Tools 1 piece

  • Weapon Sword / Greatsword Pointed with Thick Crossguard Flat Silver Part 18031 Element 6078442 ×1

Rock 1 piece

  • Rock Boulder 4 x 4, Bottom Trans-Orange Part 30294 Element 6167280 or 6120912 ×1

Technic Bushes 1 piece

  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×1

Minifigures 2 figures

  • Royal Soldier with Dark Azure Armor Minifigure, checked as a whole figure ×1
  • Crust Smasher with Shoulder Armor 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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