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.

The Fortress

Checking

21127 The Fortress

959 pieces in 170 part and color combinations, plus 4 minifigures.

The official piece count includes the 25 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.

2 more look-alike pairs
  • Plate 2 x 8 Black ×1 Dark Bluish Gray ×8 Black is darker than Dark Bluish Gray.
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Black ×8 Dark Bluish Gray ×77 Black is darker than Dark Bluish Gray.
Show

Piece checklist

Bricks 353 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 Also in Dark Bluish Gray ×8
  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 Also in Dark Bluish Gray ×9
  • Brick 2 x 4 Black Part 3001 Element 300126 Also in Dark Bluish Gray ×1
  • Brick 2 x 8 Black Part 3007 Element 6037390 or 300726 ×15
  • Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 Also in Black ×4
  • Brick 2 x 2 Dark Bluish Gray Part 3003 Element 4211060 Also in Black ×17
  • Brick 2 x 4 Dark Bluish Gray Part 3001 Element 4211085 Also in Black ×13
  • Brick 1 x 2 Dark Green Part 3004 Element 6618072 or 4245570 ×2
  • Brick 2 x 4 Dark Green Part 3001 Element 4260493 ×2
  • Brick 2 x 6 Green Part 2456 Element 4181135 or 4142867 ×2
  • Brick 1 x 1 Light Bluish Gray Part 3005 Element 4211389 ×6
  • Brick 1 x 16 Light Bluish Gray Part 2465 Element 4211366 ×1
  • Brick 1 x 2 Light Bluish Gray Part 3004 Element 4211388 ×39
  • Brick 1 x 4 Light Bluish Gray Part 3010 Element 4211394 ×2
  • Brick 2 x 10 Light Bluish Gray Part 3006 Element 4617862 or 4211390 ×1
  • Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×45
  • Brick 2 x 2 x 3 Light Bluish Gray Part 30145 Element 4211650 ×14
  • Brick 2 x 4 Light Bluish Gray Part 3001 Element 4211385 ×40
  • Brick 2 x 6 Light Bluish Gray Part 2456 Element 4274668 or 4211795 ×9
  • Brick 2 x 8 Light Bluish Gray Part 3007 Element 6037399 or 4211391 ×2
  • Brick 1 x 1 Medium Nougat Part 3005 Element 6057986 or 4569624 ×4
  • Brick 1 x 2 with Reddish Brown and Dark Brown Lines Print Medium Nougat Part 3004pr0014 Element 6097024 ×2
  • Brick 2 x 3 Orange Part 3002 Element 4153826 or 4125971 ×4
  • Brick 1 x 1 Reddish Brown Part 3005 Element 4211242 ×2
  • Brick 1 x 2 Reddish Brown Part 3004 Element 4613963 or 4211149 ×1
  • Brick 1 x 4 Reddish Brown Part 3010 Element 4211225 ×2
  • Brick 2 x 2 Reddish Brown Part 3003 Element 4211210 ×64
  • Brick 2 x 4 Reddish Brown Part 3001 Element 4211201 ×20
  • Brick 2 x 6 Reddish Brown Part 2456 Element 4286200 or 4216615 ×2
  • Brick 2 x 2 Tan Part 3003 Element 4114306 or 300305 ×12
  • Brick 2 x 2 without Inside Ridges Trans-Dark Blue Part 6223 Element 6514091 or 6238043 ×3
  • Brick 2 x 2 without Inside Ridges Trans-Green Part 6223 Element 6514090 or 6219774 ×5

Plates 179 pieces

  • Plate 2 x 2 Black Part 3022 Element 302226 Also in Dark Bluish Gray ×1
  • Plate 2 x 6 Black Part 3795 Element 379526 Also in Dark Bluish Gray ×2
  • Plate 2 x 8 Black Part 3034 Element 303426 Also in Dark Bluish Gray ×1
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 6 x 6 Blue Part 3958 Element 4199519 or 395823 ×3
  • Plate 2 x 4 Bright Green Part 3020 Element 6141590 or 6014494 ×2
  • Plate 4 x 4 Bright Green Part 3031 Element 4617799 or 4243836 ×2
  • Plate 6 x 12 Bright Green Part 3028 Element 4541414 ×13
  • Plate 6 x 6 Bright Green Part 3958 Element 6004650 or 4184006 ×1
  • Plate 1 x 1 Dark Bluish Gray Part 3024 Element 4210719 1 spare in the box ×6
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×26
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×9
  • Plate 1 x 6 Dark Bluish Gray Part 3666 Element 4211056 ×2
  • Plate 1 x 8 Dark Bluish Gray Part 3460 Element 4210998 ×4
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 Also in Black ×8
  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 Also in Black ×4
  • Plate 2 x 8 Dark Bluish Gray Part 3034 Element 4210997 Also in Black ×8
  • Plate 8 x 8 Dark Bluish Gray Part 41539 Element 4210802 ×6
  • Plate 1 x 2 Dark Orange Part 3023 Element 4570877 or 4162217 ×2
  • Plate 2 x 2 Dark Orange Part 3022 Element 4615606 or 4603741 ×3
  • Plate 2 x 4 Dark Orange Part 3020 Element 4535928 or 4164449 ×1
  • Plate 2 x 2 Dark Red Part 3022 Element 4585479 or 4163160 ×4
  • Plate 1 x 3 Green Part 3623 Element 4107758 or 362328 ×4
  • Plate 1 x 4 Green Part 3710 Element 371028 ×3
  • Plate 2 x 3 Green Part 3021 Element 302128 ×2
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 1 spare in the box ×1
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×2
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×8
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 1 x 1 Reddish Brown Part 3024 Element 4221744 1 spare in the box ×1
  • Plate 1 x 4 Reddish Brown Part 3710 Element 4211190 ×4
  • Plate 2 x 2 Reddish Brown Part 3022 Element 4613975 or 4216695 ×2
  • Plate 6 x 6 Tan Part 3958 Element 4125217 ×6
  • Plate 1 x 1 Trans-Orange Part 3024 Element 6513961 or 6252040 1 spare in the box ×8
  • Plate 1 x 2 Trans-Orange Part 3023 Element 6514005 or 6240217 ×3
  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 1 spare in the box ×8
  • Plate 1 x 2 Trans-Yellow Part 3023 Element 6514002 or 6240211 ×6
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×3
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×4
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×2
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×2

Plates Special 152 pieces

  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Black Part 87580 Element 6663108 or 4565323 Also in Dark Bluish Gray ×8
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 ×6
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Dark Bluish Gray Part 15573 Element 6092572 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Bluish Gray Part 87580 Element 6126083 or 4565322 Also in Black ×77
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Red Part 87580 Element 4613761 ×3
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Dark Tan Part 15573 Element 6092591 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Tan Part 87580 Element 6126075 or 4578032 ×3
  • Bracket 1 x 2 - 2 x 2 Green Part 44728 Element 6117971 or 6048853 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Green Part 87580 Element 6389692 or 4565321 ×22
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Light Bluish Gray Part 15573 Element 6066097 or 4211451 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×13
  • Plate Special 1 x 2 [Side Handle Closed Ends] Pearl Gold Part 48336 Element 4585493 ×4
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Reddish Brown Part 15573 Element 6092590 ×1
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Reddish Brown Part 60478 Element 6102975 ×2
  • Plate Special 1 x 2 with Clip Horizontal on Side White Part 11476 Element 6313115 or 6070712 ×1
  • Plate Special 1 x 2 with Handle on End [Closed Ends] White Part 60478 Element 6552131 or 4515364 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Yellow Part 87580 Element 6126050 or 4565386 ×1

Minifig Accessories 48 pieces

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Dark Brown Part 64644 Element 4538950 ×8
  • Tap 1 x 1 without Hole in Spout Light Bluish Gray Part 4599b Element 4211503 3 spares in the box ×40

Bricks Special 47 pieces

  • Brick Special 1 x 2 with Masonry Brick Profile Dark Bluish Gray Part 98283 Element 6000311 ×22
  • Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Light Bluish Gray Part 60475b Element 6345426 or 4533772 ×2
  • Brick Special 1 x 1 with Handle Light Bluish Gray Part 2921 Element 6170569 or 4225532 ×3
  • Brick Special 1 x 1 with Headlight Light Bluish Gray Part 4070 Element 4211476 ×2
  • Brick Special 1 x 2 with Vertical Clip [Open O Clip] Light Bluish Gray Part 30237b Element 6320297 or 4641682 ×8
  • Brick Special 1 x 1 with Stud on 1 Side Reddish Brown Part 87087 Element 6062574 or 4618545 ×2
  • Brick Special 1 x 4 Palisade [aka Log] Reddish Brown Part 30137 Element 4211181 ×4
  • Brick Special 1 x 2 with Groove Tan Part 4216 Element 6103001 or 4163617 ×2
  • Brick Special 1 x 2 with Groove White Part 4216 Element 6619288 or 4264360 ×2

Plates Round Curved and Dishes 39 pieces

  • Plate Round 1 x 1 with Open Stud Black Part 85861 Element 6168646 or 6100627 1 spare in the box ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×2
  • Plate Round 1 x 1 with Open Stud Light Bluish Gray Part 85861 Element 6168647 or 6124825 1 spare in the box ×30
  • Plate Round 1 x 1 with Solid Stud Lime Part 6141 Element 4183133 1 spare in the box ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Dark Blue Part 6141 Element 6514055 or 6240214 1 spare in the box ×1

Tiles 34 pieces

  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 ×1
  • Tile 1 x 4 with Groove Dark Bluish Gray Part 2431 Element 4211053 ×6
  • Tile 2 x 2 with Groove Dark Bluish Gray Part 3068b Element 4211055 ×4
  • Tile 2 x 4 with Groove Dark Bluish Gray Part 87079 Element 4560184 ×6
  • Tile 1 x 2 with Groove Dark Tan Part 3069b Element 4496699 ×2
  • Tile 2 x 4 with Groove Green Part 87079 Element 4566179 ×1
  • Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×3
  • Tile 2 x 4 with Groove Light Bluish Gray Part 87079 Element 4560183 ×8
  • Tile 1 x 2 with Groove Medium Nougat Part 3069b Element 6021997 ×2
  • Tile 2 x 2 with Dark Brown Minecraft Grid Print (Crafting Table) Medium Nougat Part 3068bpr0236 Element 6097003 ×1

Plants & Trees 20 pieces

  • Plant, Carrot Top Bright Green Part 33183 Element 4119479 1 spare in the box ×1
  • Plant, Flower 2 x 2 Leaves - Angular Bright Green Part 4727 Element 4143562 ×2
  • Plant, Flower, Plate Round 1 x 1 with 4 Petals Bright Green Part 33291 Element 6170300 or 4619599 1 spare in the box ×3
  • Plant, Carrot Top Bright Light Orange Part 33183 Element 6096682 1 spare in the box ×2
  • Plant, Flower, Plate Round 1 x 1 with 4 Petals Bright Light Orange Part 33291 Element 6170304 or 4624184 1 spare in the box ×2
  • Plant, Carrot Orange Part 33172 Element 6424015 or 6103249 ×1
  • Plant, Apple Red Part 33051 Element 6054438 or 4119487 ×1
  • Plant, Flower, Plate Round 1 x 1 with 4 Petals Red Part 33291 Element 6163983 or 6035617 1 spare in the box ×4
  • Plant, Flower, Plate Round 1 x 1 with 4 Petals Reddish Brown Part 33291 Element 6170302 or 4623429 1 spare in the box ×4

Bricks Round and Cones 15 pieces

  • Brick Round 1 x 1 Open Stud Lime Part 3062b Element 4212454 ×12
  • Cone 1 x 1 [Top Groove] Trans-Orange Part 59900 Element 6514017 or 6172233 ×3

Technic Beams 14 pieces

  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×2
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Dark Bluish Gray Part 60483 Element 6265093 or 6006141 ×5
  • Technic Beam 1 x 3 Thin Green Part 6632 Element 6374071 or 6036557 ×4
  • Technic Beam 1 x 2 Thin Light Bluish Gray Part 41677 Element 6348143 or 4211741 ×3

Bricks Sloped 9 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Light Bluish Gray Part 54200 Element 4521921 or 4244372 1 spare in the box ×1
  • Brick Sloped 45° 2 x 2 Trans-Dark Blue Part 3039 Element 6514101 or 6244887 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Orange Part 54200 Element 6245265 or 4244369 2 spares in the box ×6

Hinges, Arms and Turntables 8 pieces

  • Hinge Brick 1 x 4 [Lower] Dark Bluish Gray Part 3831 Element 4210795 ×1
  • Hinge Brick 1 x 4 [Upper] Dark Bluish Gray Part 3830 Element 6327414 or 6011461 ×1
  • Hinge Brick 1 x 4 [Lower] Light Bluish Gray Part 3831 Element 4211461 ×1
  • Hinge Brick 1 x 4 [Upper] Light Bluish Gray Part 3830 Element 6327412 or 6011459 ×1
  • Hinge Brick 1 x 4 [Lower] Reddish Brown Part 3831 Element 4215449 ×1
  • Hinge Brick 1 x 4 [Upper] Reddish Brown Part 3830 Element 6345000 or 6011460 ×1
  • Hinge Brick 1 x 2 Base White Part 3937 Element 6619287 or 393701 ×1
  • Hinge Brick 1 x 2 Top Plate Thin White Part 3938 Element 393801 ×1

Minifig Shields, Weapons, & Tools 8 pieces

  • Weapon Sword Blocky Dark Bluish Gray Part 18787 Element 6526124 or 6134370 Also in Flat Silver ×1
  • Weapon Sword Blocky Flat Silver Part 18787 Element 6089098 Also in Dark Bluish Gray ×1
  • Weapon Sword Blocky Medium Azure Part 18787 Element 6093623 ×1
  • Weapon Sword Blocky Pearl Gold Part 18787 Element 6093621 ×1
  • Weapon Bow and Arrow, Blocky Reddish Brown Part 18792 Element 6089103 ×3
  • Weapon Sword Blocky Reddish Brown Part 18787 Element 6093622 ×1

Technic Bricks 8 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Dark Bluish Gray Part 3700 Element 4211111 ×4
  • Technic Brick 1 x 2 [2 Pin Holes] Light Bluish Gray Part 32000 Element 4211541 ×1
  • Technic Brick 1 x 1 with Pin Hole Reddish Brown Part 6541 Element 4620075 or 4528461 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Reddish Brown Part 3700 Element 4211252 ×1

Technic Pins 5 pieces

  • Technic Pin 1/2 with 2L Bar Extension Light Bluish Gray Part 61184 Element 6347715 or 4520320 ×2
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×1
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×2

Containers 4 pieces

  • Bucket 1 x 1 x 1 Handle Dark Tan Part 95344 Element 6245275 or 4626884 1 spare in the box ×1
  • Bucket 1 x 1 x 1 Light Bluish Gray Part 95343 Element 6057487 ×1
  • Treasure Chest Bottom with Rear Slots, with Groove Medium Nougat Part 4738b ×1
  • Treasure Chest Lid [Thick Hinge] Medium Nougat Part 4739a Element 6254218 or 6167286 ×1

Technic Axles 4 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×1
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×2

Tiles Special 4 pieces

  • Tile Special 2 x 3 with 2 Clips with Minecraft Face Print[Thick Open O Clips] Red Part 30350bpr0001 Element 6153845 ×4

Bars, Ladders and Fences 2 pieces

  • Bar 7 x 3 with Double Clips (Ladder) [Straight Clips] Reddish Brown Part 6020 Element 6030812 or 4541278 ×2

Minifig Heads 2 pieces

  • Minifig Head Special, Cube [Plain] Dark Brown Part 19729 Element 6138164 or 6101984 ×1
  • Minifig Head Special, Cube with Rear Ledge, Pixelated Tan Face with Pink Mouth Print White Part 19727pr0004 Element 6162259 or 6103114 ×1

Animal / Creature Body Parts 1 piece

  • Animal Body Part, Horse Head 1 x 2 with Brown Nose Print Dark Orange Part 25769pr0001 Element 6153389 ×1

Technic Bushes 1 piece

  • 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

Tools 1 piece

  • Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×1

Windows and Doors 1 piece

  • Window 1 x 2 x 2 Flat Front Reddish Brown Part 60592 Element 6382102 or 4595814 ×1

Minifigures 4 figures

  • Skeleton, Square Skull (60115 Torso) Minifigure, checked as a whole figure ×1
  • Skeleton, Square Skull, Flat Silver Helmet Minifigure, checked as a whole figure ×1
  • Skeleton, Square Skull, Flat Silver Armor Minifigure, checked as a whole figure ×1
  • Steve in Pearl Gold Helmet and 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.

We value your privacy

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