Missing Piece Checker: 70131 Rogon's Rock Flinger

Checking

70131 Rogon's Rock Flinger

237 pieces in 100 part and color combinations, plus 3 minifigures.

The official piece count includes the 20 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.

Every bag and the box. Shake out each bag, check its corners and seams, and look inside the empty box.
Inside what you have built. Small pieces lodge inside tubes, under plates and between studs. Turn the model over and look.
The last few steps. Compare each recent step with its parts callout. A piece used in the wrong place earlier leaves you one short later.
Look-alike colors. Compare each color with the step's parts callout, especially White against Trans-Clear.
The spare pieces. Many sets include a few extra small pieces. Check them before you order a replacement.
The floor and your building area. Check under furniture, the chair and the edges of your building surface.

Piece checklist

Technic Pins 39 pieces

Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×16
Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×4
Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×6
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×10
Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 ×1
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×2

Plates Special 25 pieces

Plate Special 1 x 2 with Clip Horizontal on End Dark Bluish Gray Part 63868 Element 6336990 or 4581225 ×2
Bracket 1 x 2 - 2 x 2 Inverted Light Bluish Gray Part 99207 Element 4654580 ×7
Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Light Bluish Gray Part 61252 Element 6335378 or 4541978 ×4
Plate Special 1 x 2 [Side Handle Closed Ends] Light Bluish Gray Part 48336 Element 4244627 ×2
Plate Special 1 x 2 with Clip Horizontal on Side Light Bluish Gray Part 11476 Element 6313114 or 6028812 ×1
Plate Special 1 x 2 with Handle on End [Closed Ends] Light Bluish Gray Part 60478 Element 4515369 ×2
Plate Special 2 x 2 with Wheels Holder Wide - Technic Pins Light Bluish Gray Part 47720 Element 4529120 or 4219243 ×1
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] White Part 60897 Element 6330191 or 4613256 ×4
Plate Special 1 x 2 with Clips Horizontal [Open O Clips] White Part 60470b Element 6347287 or 4556152 ×2

Bricks Sloped 17 pieces

Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Dark Bluish Gray Part 3747b Element 4211064 ×1
Brick Sloped 45° 2 x 3 Light Bluish Gray Part 3038 Element 4211773 ×4
Brick Sloped 65° 2 x 2 x 2 with Bottom Tube Sand Blue Part 3678b Element 6043736 ×4
Brick Sloped 18° 4 x 1 White Part 60477 Element 6619300 or 4515359 ×2
Brick Sloped 18° 4 x 2 White Part 30363 Element 4143000 ×3
Brick Sloped 45° 2 x 2 White Part 3039 Element 6552103 or 303901 ×3

Bricks 11 pieces

Brick 1 x 8 Blue Part 3008 Element 300823 ×1
Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×3
Brick 2 x 8 Light Bluish Gray Part 3007 Element 6037399 or 4211391 ×2
Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×3
Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×2

Technic Beams 11 pieces

Technic Beam 1 x 7 Bent (4 - 4) Thick Black Part 32348 Element 6278125 or 4128593 ×2
Technic Beam 1 x 3 Thick Dark Bluish Gray Part 32523 Element 32523199 or 4210751 ×2
Technic Beam 3 x 3 T-Shape Thick Light Bluish Gray Part 60484 Element 4552348 or 4535772 ×2
Technic Beam 3 x 5 L-Shape Thick Light Bluish Gray Part 32526 Element 4211713 ×4
Technic Beam 1 x 5 Thick White Part 32316 Element 4249021 or 4140465 ×1

Technic Bricks 10 pieces

Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Black Part 32064b ×1
Technic Brick 1 x 12 [11 Pin Holes] Dark Bluish Gray Part 3895 Element 4210963 ×2
Technic Brick 1 x 10 [9 Pin Holes] Light Bluish Gray Part 2730 Element 4211374 ×2
Technic Brick 1 x 2 [1 Pin Hole] Light Bluish Gray Part 3700 Element 4211440 ×3
Technic Brick 1 x 4 [3 Pin Holes] White Part 3701 Element 6601913 or 370101 ×2

Wheels and Tyres 10 pieces

Wheel Hard Plastic with Small Cleats Dark Bluish Gray Part 64711 Element 6178537 or 6007027 ×4
Wheel 11 x 8 with Center Groove Light Bluish Gray Part 42610 Element 4211758 ×2
Wheel 31 x 15 Technic, 7 Pin Holes White Part 60208 Element 6524592 or 4512751 ×4

Bricks Curved 9 pieces

Brick Curved 2 x 2 with Lip, No Studs Blue Part 30602 Element 4171849 ×1
Brick Curved 2 x 1 No Studs [1/2 Bow] White Part 11477 Element 6552145 or 6548276 ×4
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End White Part 47457 Element 4494474 ×2
Brick Curved 4 x 1 Double, No Studs White Part 93273 Element 6552143 or 6023806 ×2

Plates Round Curved and Dishes 7 pieces

Dish 2 x 2 Inverted [Radar] Trans-Dark Blue Part 4740 Element 6580383 or 6398233 ×2
Plate Round 1 x 1 with Solid Stud Trans-Dark Blue Part 6141 Element 6514055 or 6240214 ×1
Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 ×4

Plates Wedged 6 pieces

Wedge Plate 3 x 3 Cut Corner Sand Blue Part 2450 Element 6439270 or 6051596 ×4
Wedge Plate 6 x 3 Left White Part 54384 Element 4287708 ×1
Wedge Plate 6 x 3 Right White Part 54383 Element 4287707 ×1

Animal / Creature Body Parts 5 pieces

Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Large Black Part 11089 Element 6213729 or 6015884 ×1
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium Black Part 87747 Element 6270091 or 4563477 ×1
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium Flat Silver Part 87747 Element 4617190 ×1
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Large Light Bluish Gray Part 11089 Element 6236917 or 6023742 ×2

Bars, Ladders and Fences 5 pieces

Bar 6L with Stop Ring Black Part 63965 Element 6170421 or 6081988 ×1
Bar Holder with Clip Black Part 11090 Element 6315887 or 6015891 ×4

Large Buildable Figures 5 pieces

Large Figure Armor with Spikes [Flexible] Black Part 92234 Element 4626682 ×1
Large Figure Weapon, Barrel with 2 Pin Holes and 3 Axle Holes Trans-Light Blue Part 98585 Element 6503210 or 6248915 ×4

Technic Axles 5 pieces

Technic Axle 6 Black Part 3706 Element 370626 ×1
Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×4

Bricks Special 4 pieces

Brick Special 1 x 4 with 4 Studs on One Side Dark Bluish Gray Part 30414 Element 4210725 ×2
Brick Special 1 x 2 with Handle Tan Part 30236 Element 4288513 or 4201066 ×2

Bricks Wedged 4 pieces

Brick Wedged, Sloped 4 x 4 Triple, Stud Notches Sand Blue Part 48933 Element 6051598 or 4227793 ×2
Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing End White Part 47456 Element 4610897 ×2

Minifig Accessories 4 pieces

Equipment Camera with Side Sight [aka Space Gun] Black Part 4360 Element 436026 ×1
Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Black Part 64644 Element 4538456 ×1
Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Black Part 4349 Element 434926 ×2

Minifig Shields, Weapons, & Tools 4 pieces

Weapon Gun / Blaster 1 x 2 x 2/3 with Studs on Sides and Handle Black Part 15071 Element 6051527 ×1
Weapon Gun / Pistol Two Barrel, 10 Ribs Black Part 95199 Element 4659662 ×2
Weapon Hammer Head Flat Silver Part 11106 Element 6037878 ×1

Technic Panels 4 pieces

Technic Engine Block Half / Side Intake Panel Sand Blue Part 61069 Element 6051594 ×2
Technic Panel Car Mudguard Left White Part 61071 Element 6015597 or 4540101 ×1
Technic Panel Car Mudguard Right White Part 61070 Element 6015596 or 4540100 ×1

Bricks Round and Cones 3 pieces

Cone 1 x 1 [Top Groove] Trans-Bright Green Part 59900 Element 6514024 or 6337628 ×1
Brick Round 1 x 1 Open Stud Trans-Light Blue Part 3062b Element 6514238 or 6238677 ×2

Rock 3 pieces

Rock Boulder 4 x 4, Bottom Dark Bluish Gray Part 30294 Element 4506779 ×1
Rock Boulder 4 x 4, Top Dark Bluish Gray Part 30293 Element 4506778 ×1
Rock 1 x 1 Crystal 4 Point Trans-Light Blue Part 11127 Element 6248885 or 6019570 ×1

Tiles 3 pieces

Tile 2 x 2 with Groove Blue Part 3068b Element 306823 ×1
Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×2

Tiles Round and Curved 3 pieces

Tile Round 1 x 1 Trans-Light Blue Part 98138 Element 6514192 or 6274739 ×1
Tile Round 1 x 1 White Part 98138 Element 6564903 or 6284572 ×2

Pneumatics 2 pieces

Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 ×2

String, Bands and Reels 2 pieces

Rubber Belt Small [15mm ID] [Round Cross Section] White Part 85543 Element 6699001 or 4580665 ×2

Stickers 1 piece

Sticker Sheet for Set 70131-1 [No Color/Any Color] Part 16474 Element 6061570 ×1

Technic Connectors 1 piece

Technic Axle and Pin Connector Perpendicular Split Black Part 92907 Element 6279021 or 4610371 ×1

Technic Special 1 piece

Technic Grabber Arm Claw with 3L Thick Beam [Type 1] Black Part 11953 Element 6022769 ×1

Tiles Special 1 piece

Tile Special 2 x 2 Inverted Dark Bluish Gray Part 11203 Element 6013082 ×1

Transportation - Land 1 piece

Handlebars Dark Bluish Gray Part 30031 Element 4261908 or 4210644 ×1

Minifigures 3 figures

Rinona Minifigure, checked as a whole figure ×1
Sparacon Minifigure, checked as a whole figure ×1
Rogon 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.