Missing Piece Checker: 70730 Chain Cycle Ambush

Checking

70730 Chain Cycle Ambush

283 pieces in 124 part and color combinations, plus 3 minifigures.

The official piece count includes the 15 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

Plates Round Curved and Dishes 33 pieces

Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×6
Plate Round 1 x 1 with Solid Stud Dark Bluish Gray Part 6141 Element 4210633 ×3
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Dark Bluish Gray Part 2654 Element 4613980 or 4278274 ×5
Plate Round 4 x 4 with Pin Hole Dark Brown Part 60474 Element 6005030 ×1
Plate Round 1 x 1 Swirled Top Reddish Brown Part 15470 Element 6060731 ×1
Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 ×4
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Light Blue Part 2654 Element 6581775 or 6171733 ×1
Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 ×12

Technic Pins 27 pieces

Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×8
Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×3
Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 ×10
Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×1
Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×5

Minifig Shields, Weapons, & Tools 17 pieces

Tool Screwdriver and Spanner / Wrench Black Part 4006 Element 6034000 or 4569095 ×1
Weapon Lightsaber Hilt with Bottom Ring Black Part 64567 Element 4614712 or 4598897 ×1
Weapon Scythe / Crescent Blade Serrated with Bar Flat Silver Part 98141 Element 6270142 or 4651535 ×2
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] Flat Silver Part 21459 Element 6116593 ×2
Weapon Scythe / Crescent Blade Serrated with Bar Pearl Titanium Part 98141 Element 6116900 ×1
Weapon Sword with Jagged Edges and Marbled White Pattern Trans-Bright Green Part 11439pat0003 Element 6372655 or 6116913 ×6
Tool Saw with Handle and Tooth Trans-Light Blue Part 11601 Element 6021974 ×2
Weapon Sword Serrated with Marbled Dark Green Pattern Trans-Neon Green Part 19858pat0002 Element 6126496 ×1
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] Yellowish Green Part 21459 Element 6288255 or 6116600 ×1

Animal / Creature Body Parts 16 pieces

Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium Black Part 87747 Element 6270091 or 4563477 ×8
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Red Part 53451 Element 6270107 or 4568388 ×2
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small White Part 53451 Element 6270106 or 4568387 ×3
Insect Body Part, Leg / Tail / Tentacle / Claw Yellowish Green Part 15064 Element 6307460 or 6109497 ×3

Technic Axles 15 pieces

Technic Axle 4 Black Part 3705 Element 370526 ×2
Technic Axle 8 Black Part 3707 Element 370726 ×2
Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×3
Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×1
Technic Axle 2 Notched Red Part 32062 Element 4142865 ×7

Plates 14 pieces

Plate 1 x 2 Black Part 3023 Element 302326 ×4
Plate 1 x 4 Black Part 3710 Element 371026 ×1
Plate 1 x 6 Dark Blue Part 3666 Element 4508313 or 4177734 ×2
Plate 2 x 4 Dark Blue Part 3020 Element 6554194 or 4667595 ×1
Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×2
Plate 2 x 3 Green Part 3021 Element 302128 ×1
Plate 1 x 2 Reddish Brown Part 3023 Element 4211150 ×2
Plate 2 x 2 Reddish Brown Part 3022 Element 4613975 or 4216695 ×1

Bricks Sloped 12 pieces

Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Black Part 61409 Element 4541191 ×6
Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Black Part 3747b Element 4500458 or 374726 ×1
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Blue Part 3660 Element 6025375 or 4590785 ×1
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Neon Green Part 54200 Element 6245280 or 6076751 ×4

Technic Connectors 12 pieces

Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×1
Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×2
Technic Axle and Pin Connector Angled #3 - 157.5° Black Part 32016 Element 6261386 or 4107082 ×6
Technic Pin Connector Round [Slotted] Light Bluish Gray Part 62462 Element 6173127 or 4526985 ×3

Minifig Upper Body 9 pieces

Arm Mechanical Straight (Droid) [2 Clips at 90°] Black Part 59230 Element 4505757 ×3
Arm Mechanical with Clip [Thick Support] Pearl Titanium Part 98313 Element 6276869 or 6008484 ×6

Bricks Curved 8 pieces

Brick Curved 2 x 1 No Studs [1/2 Bow] Black Part 11477 Element 6047276 ×2
Brick Curved Inverted 4 x 1 Black Part 13547 Element 6039869 ×1
Brick Curved 2 x 2 x 2/3 Dark Blue Part 15068 Element 6554196 or 6061569 ×3
Brick Curved 2 x 1 No Studs [1/2 Bow] Flat Silver Part 11477 Element 6047418 ×2

Hinges, Arms and Turntables 8 pieces

Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 9 Teeth Dark Bluish Gray Part 30553 Element 4210695 ×2
Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Dark Bluish Gray Part 73983 Element 6102774 or 4271344 ×2
Hinge Plate 1 x 2 Locking with 1 Finger On Top Light Bluish Gray Part 30383 Element 6265694 or 4219913 ×2
Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] White Part 73983 Element 6102776 or 4287153 ×2

Technic Special 8 pieces

Technic Cam Dark Bluish Gray Part 6575 Element 6575199 or 4210759 ×4
Technic Ball Joint Lime Part 32474 Element 4624381 or 4290718 ×4

Bricks Special 7 pieces

Bracket 5 x 2 x 2 1/3 with Holes, Inside Stud Holder Black Part 76766 Element 6171066 or 6012983 ×1
Brick Special 1 x 4 with 4 Studs on One Side Black Part 30414 Element 4162443 ×2
Brick Special 1 x 2 with 2 Pins, Round Pin Holes Dark Bluish Gray Part 30526 Element 4210697 ×1
Brick Special 2 x 2 with 2 Pins and Axle Hole Dark Bluish Gray Part 30000 Element 6405646 or 4211024 ×1
Brick Special 1 x 2 with Pin Tan Part 2458 Element 4205105 or 4125270 ×2

Energy Effects 7 pieces

Wave / Flame Rounded Double with Axle with Marbled Yellowish Green Pattern Dark Blue Part 18396pat0002 Element 6115569 ×2
Wave / Flame Rounded with Base Rim Trans-Light Blue Part 6126b Element 6167739 ×1
Wave / Flame Rounded Single with Pin Yellowish Green Part 18395 Element 6109564 ×4

Bars, Ladders and Fences 6 pieces

Bar 6L with Stop Ring Black Part 63965 Element 6170421 or 6081988 ×1
Bar Holder with Clip Dark Bluish Gray Part 11090 Element 6336970 or 6015890 ×1
Bar 4L (Lightsaber Blade / Wand) Trans-Light Blue Part 30374 Element 6507882 or 6170187 ×1
Bar 4L (Lightsaber Blade / Wand) Trans-Neon Green Part 30374 Element 6507881 or 6170186 ×1
Bar Holder with Clip White Part 11090 Element 6341465 or 6136789 ×2

String, Bands and Reels 6 pieces

Chain 6L [5 Links] Black Part 92338 Element 6328408 or 6062698 ×3
Technic Rubber Belt Medium [24mm ID] [Round Cross Section] Red Part 85544 Element 4544145 or 4544143 ×1
Chain 16L [21 Links] Trans-Neon Green Part 60169 Element 6313018 or 6206297 ×2

Technic Beams 5 pieces

Technic Beam 1 x 9 Bent (7 - 3) Thick Black Part 32271 Element 6276835 or 4140327 ×2
Technic Beam 3 x 5 L-Shape Thick Black Part 32526 Element 4142823 or 3252626 ×1
Technic Beam 1 x 9 Bent (6 - 4) Thick Dark Bluish Gray Part 6629 Element 6279883 or 4210638 ×2

Technic Bushes 5 pieces

Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 ×3
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 ×2

Bricks Round and Cones 4 pieces

Cone 1 x 1 [Top Groove] Pearl Gold Part 59900 Element 4529247 ×1
Brick Round 2 x 2 [Grill] Reddish Brown Part 92947 Element 6036503 ×1
Cone 1 x 1 Inverted with Bar at Bottom (Ice Cream Cone) Tan Part 11610 Element 6538442 or 6017003 ×1
Brick Round 2 x 2 with Axle Hole Trans-Neon Green Part 3941 Element 6273157 or 611649 ×1

Bricks Wedged 4 pieces

Brick Wedged, Curved 4 x 3 No Studs [Plain] Dark Blue Part 64225 Element 6554227 or 6394560 ×1
Brick Wedged, Curved 4 x 4 No Top Studs Dark Blue Part 47753 Element 6289824 or 6115178 ×1
Brick Wedged, Curved Inverted 6 x 2 Left Dark Blue Part 41765 Element 6097490 or 4225579 ×1
Brick Wedged, Curved Inverted 6 x 2 Right Dark Blue Part 41764 Element 6097487 or 4225582 ×1

Plates Wedged 4 pieces

Wedge Plate 2 x 4 Dark Blue Part 51739 Element 4613335 or 4251895 ×2
Wedge Plate 4 x 2 Left White Part 41770 Element 6552119 or 4161326 ×1
Wedge Plate 4 x 2 Right White Part 41769 Element 6552118 or 4160857 ×1

Projectiles / Launchers 4 pieces

Launcher, Plate Special 1 x 2 with Mini Blaster Black Part 15403 Element 6102734 ×2
Launcher Trigger, Weapon Gun Trigger Dark Bluish Gray Part 15392 Element 6051334 ×2

Transportation - Sea and Air 4 pieces

Propeller 8 Blade 5 Diameter Trans-Neon Green Part 41530 Element 6109915 or 4159686 ×4

Bricks 3 pieces

Brick 1 x 2 Black Part 3004 Element 300426 ×1
Brick 2 x 4 Black Part 3001 Element 300126 ×1
Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 ×1

Technic Bricks 3 pieces

Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×2
Technic Brick 1 x 1 with Pin Hole Reddish Brown Part 6541 Element 4620075 or 4528461 ×1

Tiles Round and Curved 3 pieces

Tile Round 1 x 1 Trans-Light Blue Part 98138 Element 6514192 or 6274739 ×1
Tile Round 2 x 2 with Ghost Face Print Yellowish Green Part 14769pr1027 Element 6116776 ×2

Tiles Special 3 pieces

Tile Special 2 x 2 Inverted Dark Bluish Gray Part 11203 Element 6013082 ×1
Tile Special 1 x 1 with Clip with Rounded Edges Pearl Gold Part 15712 Element 6262138 or 6071259 ×2

Animals / Creatures 2 pieces

Creature, Ghost, Skreemer Mask with Mouth Lopsided with Pointed Teeth Print Trans-Neon Green Part 19861pr0002 Element 6117264 ×1
Creature, Ghost, Skreemer Mask with Mouth Open with Pointed Teeth and Green Tongue Print Trans-Neon Green Part 19861pr0001 Element 6117248 ×1

Minifig Accessories 2 pieces

Equipment Hose Nozzle / Gun with Side String Hole Simplified Light Bluish Gray Part 60849 Element 6641461 or 4515897 ×2

Wheels and Tyres 2 pieces

Wheel Hard Plastic, Treaded with 7 Pin Holes and 6 Small Holes Black Part 11094 Element 6019988 ×2

Containers 1 piece

Box / Crate with Handholds 3 x 4 x 1 2/3 Reddish Brown Part 30150 Element 4211185 ×1

Stickers 1 piece

Sticker Sheet for Set 70730-1 [No Color/Any Color] Part 21064 Element 6112827 ×1

Technic Gears 1 piece

Technic Gear 36 Tooth Double Bevel Black Part 32498 Element 4255563 or 4177434 ×1

Minifigures 3 figures

Ghost Chain Master Wrayth with Legs Minifigure, checked as a whole figure ×1
Ghost Warrior Cowler / Pyrrhus / Cyrus Minifigure, checked as a whole figure ×1
Zane in Airjitzu Outfit with Neck Bracket and Tile with Clip (Possession) 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.