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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.

Midi-Scale Millennium Falcon

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7778 Midi-Scale Millennium Falcon

356 pieces in 94 part and color combinations.

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.

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Piece checklist

Light Bluish Gray 173 pieces

  • Arm Mechanical with 2 Clips [Battle Droid] Light Bluish Gray Part 30377 Element 6319333 or 4211658 1 spare in the box ×2
  • Bar 4L (Lightsaber Blade / Wand) Light Bluish Gray Part 30374 Element 6116608 or 4211628 ×2
  • Brick 1 x 2 Light Bluish Gray Part 3004 Element 4211388 ×4
  • Brick 2 x 6 Light Bluish Gray Part 2456 Element 4274668 or 4211795 ×2
  • Brick Special 1 x 1 with Headlight Light Bluish Gray Part 4070 Element 4211476 ×10
  • Brick Special 1 x 4 with Groove Light Bluish Gray Part 2653 Element 4211613 ×2
  • Brick Wedged 3 x 3 Facet Light Bluish Gray Part 2462 Element 4211718 ×1
  • Brick Wedged, Angled 3 x 2 Left Light Bluish Gray Part 6565 Element 6449622 or 4527767 ×2
  • Brick Wedged, Angled 3 x 2 Right Light Bluish Gray Part 6564 Element 4526932 or 4211559 ×1
  • Cone 4 x 4 x 2, Axle Hole [Plain] Light Bluish Gray Part 3943b Element 6199554 or 4497652 ×1
  • Dish 4 x 4 Inverted [Radar] Light Bluish Gray Part 3960 Element 4211664 ×1
  • Dish 6 x 6 Inverted (Radar) with Hollow Studs Light Bluish Gray Part 44375a ×2
  • Engine, Large Light Bluish Gray Part 43121 Element 4211767 ×2
  • Plate 1 x 12 Light Bluish Gray Part 60479 Element 4514846 ×4
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×7
  • Plate 1 x 3 Light Bluish Gray Part 3623 Element 4211429 or 3623194 ×2
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×3
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×5
  • Plate 1 x 8 Light Bluish Gray Part 3460 Element 4211425 ×2
  • Plate 2 x 10 Light Bluish Gray Part 3832 Element 4211462 ×3
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×7
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×6
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×5
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×7
  • Plate 4 x 10 Light Bluish Gray Part 3030 Element 4211402 ×1
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Light Bluish Gray Part 2654 Element 4278273 or 4276273 ×2
  • Plate Round 4 x 4 with Pin Hole Light Bluish Gray Part 60474 Element 4515351 ×1
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Light Bluish Gray Part 4081b Element 6281998 or 4632575 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Light Bluish Gray Part 2540 Element 4211632 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Light Bluish Gray Part 3794b ×4
  • Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 1 spare in the box ×2
  • Technic Cylinder 4 x 4 with Pin Holes and Centre Bar, Closed Sides on Bar Light Bluish Gray Part 41531 Element 4507052 or 4285324 ×2
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×11
  • Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×8
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×4
  • Tile Round 2 x 2 with Bottom Cross Light Bluish Gray Part 4150 Element 4211480 ×7
  • Tile Round 2 x 2 with Fine Mesh Grill Print Light Bluish Gray Part 4150pr0022 Element 4221881 ×6
  • Turntable 2 x 2 Plate - Top Light Bluish Gray Part 3679 Element 4540203 or 4495467 ×3
  • Wedge Plate 3 x 2 Left Light Bluish Gray Part 43723 Element 4211794 ×5
  • Wedge Plate 3 x 2 Right Light Bluish Gray Part 43722 Element 4211791 ×4
  • Wedge Plate 3 x 3 Cut Corner Light Bluish Gray Part 2450 Element 4211361 ×7
  • Wedge Plate 6 x 3 Left Light Bluish Gray Part 54384 Element 4282789 ×4
  • Wedge Plate 6 x 3 Right Light Bluish Gray Part 54383 Element 4282786 ×5
  • Wedge Plate 6 x 6 Cut Corner Light Bluish Gray Part 6106 Element 4211520 ×7
  • Wedge Plate 8 x 3, 22° Left Light Bluish Gray Part 50305 Element 4258275 or 4228302 ×2
  • Wedge Plate 8 x 3, 22° Right Light Bluish Gray Part 50304 Element 4258273 or 4228300 ×1

Dark Bluish Gray 95 pieces

  • Bar 1 x 3 (Radio Handle, Phone Handset) Dark Bluish Gray Part 6190 Element 4210676 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Bluish Gray Part 54200 Element 4504378 or 4244373 1 spare in the box ×4
  • Dish 2 x 2 Inverted [Radar] Dark Bluish Gray Part 4740 Element 4211010 ×1
  • Equipment Binoculars Dark Bluish Gray Part 30162 Element 4587887 or 4211051 ×4
  • Hinge Brick 1 x 2 Base Dark Bluish Gray Part 3937 Element 4211066 ×1
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Dark Bluish Gray Part 73983 Element 6102774 or 4271344 ×1
  • Plate 1 x 10 Dark Bluish Gray Part 4477 Element 4257526 or 4210816 ×3
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×6
  • Plate 1 x 6 Dark Bluish Gray Part 3666 Element 4211056 ×10
  • Plate 2 x 12 Dark Bluish Gray Part 2445 Element 4211067 ×3
  • Plate 2 x 8 Dark Bluish Gray Part 3034 Element 4210997 ×8
  • Plate 4 x 8 Dark Bluish Gray Part 3035 Element 4211061 ×2
  • Plate Round 1 x 1 with Solid Stud Dark Bluish Gray Part 6141 Element 4210633 1 spare in the box ×15
  • Support Round 2 x 2 x 2 Stand with Reach-Through Center Hole Dark Bluish Gray Part 3940b Element 4211110 ×6
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×2
  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 Also in Trans-Brown ×1
  • Tile 2 x 2 with Groove Dark Bluish Gray Part 3068b Element 4211055 ×6
  • Tile Special 1 x 1 with Clip and Straight Tips Dark Bluish Gray Part 2555 Element 6031420 or 4211069 ×7
  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×9
  • Wedge Plate 3 x 2 Right Dark Bluish Gray Part 43722 Element 4210869 ×1
  • Wedge Plate 4 x 4 Cut Corner Dark Bluish Gray Part 30503 Element 4210728 ×3

Red 19 pieces

  • Brick 2 x 2 Corner Red Part 2357 Element 235771 or 235721 ×4
  • Brick 2 x 4 Red Part 3001 Element 300121 ×1
  • Hinge Brick 1 x 2 Locking with 1 Finger Horizontal End Red Part 30541 Element 4507196 or 4183012 ×2
  • Hinge Brick 2 x 2 Top Plate Thin Red Part 6134 Element 613421 ×1
  • Plate Special 1 x 2 [Side Handle Closed Ends] Red Part 48336 Element 4226876 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Red Part 32064b ×2
  • Technic Plate 2 x 8 [7 Holes] Red Part 3738 Element 373821 ×2
  • Tile 1 x 1 with Groove Red Part 3070b Element 307021 1 spare in the box ×3
  • Turntable 2 x 2 Plate, Base Red Part 3680 Element 368021 ×3

Black 18 pieces

  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×3
  • Brick Special 1 x 4 with 4 Studs on One Side Black Part 30414 Element 4162443 ×1
  • Plate Special 1 x 2 with Clips Horizontal [Thick U-Clips] Black Part 60470a Element 4537901 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×1
  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×4
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×8

Tan 18 pieces

  • Brick 1 x 4 Tan Part 3010 Element 4113916 or 301005 ×7
  • Brick 1 x 6 Tan Part 3009 Element 4112982 or 300905 ×4
  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×7

Blue 14 pieces

  • Brick Round 2 x 2 with Axle Hole Blue Part 3941 Element 614373 or 614323 ×6
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Blue Part 4032a Element 403223 ×6
  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×2

Dark Red 13 pieces

  • Plate 1 x 1 Dark Red Part 3024 Element 4539114 or 4183901 ×9
  • Tile 1 x 2 with Groove Dark Red Part 3069b Element 4539090 or 4529548 ×4

Trans-Brown 2 pieces

  • Tile 1 x 2 with Groove Trans-Brown Part 3069b Element 6514222 or 6251292 Also in Dark Bluish Gray ×2

Yellow 2 pieces

  • Hinge Brick 1 x 4 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Yellow Part 30387 Element 4218728 or 4144568 ×2

Trans-Light Blue 1 piece

  • Hose, Ribbed 7mm D. 14L / 11.2cm Trans-Light Blue Part 78c14 Element 4556086 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 7778-1 [No Color/Any Color] Part 86448 Element 4550363 ×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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