BlockTalk Find Your Set

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.

Gamma V Laser Craft

Checking

6891 Gamma V Laser Craft

121 pieces in 61 part and color combinations, plus 2 minifigures.

LEGO counts 144 pieces. This inventory comes from a separate parts catalog and lists 135, including the 14 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.

Show

Piece checklist

Light Gray 81 pieces

  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×2
  • Brick 1 x 2 with Yellow Left Arrow with Black Border Print Light Gray Part 3004pr9985 ×2
  • Brick 1 x 3 Light Gray Part 3622 Element 362202 ×2
  • Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support Light Gray Part 3010a ×1
  • Brick 2 x 2 without Inside Ridges Light Gray Part 3003a ×1
  • Brick 2 x 3 without Cross Supports Light Gray Part 3002a ×1
  • Brick 2 x 4 Light Gray Part 3001 Element 4116259 or 300102 ×1
  • Brick Round 2 x 2 x 2 with Axle Hole and Fins Light Gray Part 4591 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Light Gray Part 3040b Element 4121933 or 304002 ×2
  • Brick Sloped 45° 2 x 2 with 12 Buttons, 3 Red Lamps, Black Panel Print Light Gray Part 3039pr9996 ×1
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Light Gray Part 3747a Element 4109695 ×5
  • Brick Special 1 x 1 with Headlight Light Gray Part 4070 Element 407002 ×4
  • Engine, Strakes, 2 x 2 Thin Top Plate Light Gray Part 4229 ×2
  • Hinge Vehicle Roof Holder 1 x 4 Light Gray Part 4315 Element 431502 ×3
  • Plate 1 x 1 Light Gray Part 3024 Element 302402 ×2
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×14
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×1
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×1
  • Plate 2 x 10 Light Gray Part 3832 Element 383202 ×1
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×3
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×4
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×4
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×1
  • Plate 4 x 4 Light Gray Part 3031 Element 4243813 or 303102 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thin Open O Clip] Light Gray Part 4085a ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Light Gray Part 3794a Element 379402 ×2
  • Plate Special 1 x 2 with Long Stud Receptacle (Space Wing) Light Gray Part 4596 Element 4188363 or 459602 ×1
  • Plate Special 1 x 4 Offset with Bar Holes Light Gray Part 4590 Element 4248161 or 4114067 ×1
  • Steering Stand 1 x 2 with Black Steering Wheel Light Gray Part 3829c01 Element 9556 ×1
  • Tail 4 x 2 x 2 Light Gray Part 3479 Element 347952 or 347902 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×1
  • Tile 1 x 2 with Arrow Long Yellow with Black Border Print Light Gray Part 3069bpr0023 ×2
  • Tile 2 x 2 with Arrow Thin Yellow with Black Border Print Light Gray Part 3068bpr0032 ×1
  • Tile 2 x 2 with Groove Light Gray Part 3068b Element 306802 ×1
  • Wedge Plate 4 x 4 Wing Left Light Gray Part 3936 Element 4248128 or 4248125 ×1
  • Wedge Plate 4 x 4 Wing Right Light Gray Part 3935 Element 4248118 or 393502 ×1
  • Wedge, Plate 8 x 8 with 4 x 4 Cutout Light Gray Part 4475 ×3

Black 28 pieces

  • Bar 1 x 3 [Clip / Anti-Stud] Black Part 4735 Element 4141580 or 473576 ×1
  • Bracket 8 x 2 x 1 1/3 Black Part 4732 Element 473226 ×2
  • Brick Round 1 x 1 with Fins, Open Stud Black Part 4588 Element 6039178 or 4246931 ×1
  • Brick Special 1 x 1 with 3 Speakers / Loudspeakers / Space Positioning Rockets Black Part 3963 Element 4200791 or 396326 ×2
  • Brick Special 1 x 2 x 2/3 with Studs on Sides Black Part 4595 Element 6681661 or 4523339 ×1
  • Cone 1 x 1 [No Top Groove] Black Part 4589 Element 4518219 or 458926 ×1
  • Door 1 x 3 x 2 Left Black Part 3189 Element 4194526 or 318926 ×1
  • Door 1 x 3 x 2 Right Black Part 3188 Element 4194525 or 318826 ×1
  • Engine, Strakes, 2 x 2 Thin Top Plate Black Part 4229 Element 4552040 or 4163480 ×2
  • Flexible Hose 8.5L with Tabless Ends (Ends same color as Tube) Black Part 73590c01a ×2
  • Hinge Vehicle Roof 4 x 4 Black Part 4213 Element 421326 ×2
  • Panel 4 x 4 x 6 Corner Convex Ribbed Black Part 4737 ×2
  • Plate 1 x 3 Black Part 3623 Element 362326 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×6
  • Tail 4 x 2 x 2, Rocket Black Part 4746 Element 4164411 or 474626 ×1
  • Weapon Gun / Torch (Space) [with Grooves] Black Part 3959 Element 4254942 or 395976 ×1

Trans-Red 8 pieces

  • Cone 1 x 1 [No Top Groove] Trans-Red Part 4589 Element 618841 ×3
  • Dish 2 x 2 Inverted [Radar] Trans-Red Part 4740 Element 6580377 or 6245303 ×1
  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 ×2
  • Tile 1 x 1 with Groove Trans-Red Part 3070b Element 6581817 or 6254248 ×2

Trans-Green 3 pieces

  • Plate 1 x 1 Trans-Green Part 3024 Element 6513967 or 6252046 ×2
  • Windscreen 6 x 4 x 2 Canopy Trans-Green Part 4474 Element 4113868 or 3006648 ×1

Trans-Yellow 1 piece

  • Antenna 1 x 4 with Rounded Top Trans-Yellow Part 3957a Element 395744 ×1

Minifigures 2 figures

  • Classic Spaceman, Black with Airtanks (3842b Helmet) Minifigure, checked as a whole figure ×1
  • Classic Space Droid - Blue with Black Antenna 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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy