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.
494 pieces in 167 part and color combinations, plus 4 minifigures.
The official piece count includes the 19 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.
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Red ×2Trans-Red ×1Trans-Red is see-through: hold the piece up to a light.
Plate 2 x 4Black ×1Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 with Handle on End [Closed Ends]Black ×6Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Technic Pin Connector Round 1L [Beam]Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]Flat SilverPart 21459Element 61165931 spare in the box×4
Trans-Red
5 pieces
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Trans-RedPart 54200Element 6245252 or 42443631 spare in the boxAlso in Red×1
Cone 1 x 1 [Top Groove]Trans-RedPart 59900Element 6514021 or 6337596×2
Projectile, Spring Shooter Ammunition 8L BarTrans-RedPart 15303Element 6287550 or 6054526×2
Dark Tan
4 pieces
Plate Special 2 x 2 with Pin on BottomDark TanPart 2476aElement 6606096 or 6276849×4
Metallic Silver
4 pieces
Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / GrateMetallic SilverPart 61409Element 6546109 or 6092115×4
Trans-Orange
4 pieces
Projectile, Spring Shooter Ammunition 8L BarTrans-OrangePart 15303Element 6296380 or 6072635×3
Tile Round 1 x 1 Half CircleTrans-OrangePart 24246Element 6507959 or 62491161 spare in the box×1
Yellow
2 pieces
Plate Special 1 x 2 [Side Handle Closed Ends]YellowPart 48336Element 4501232×1
Plate Special 1 x 2 with Clip Horizontal on EndYellowPart 63868Element 6347284 or 4535740×1
Dark Red
1 piece
Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper)Dark RedPart 34103Element 6208727×1
Pearl Titanium
1 piece
Bar 1L with Top Stud and Two Side StudsPearl TitaniumPart 92690Element 6158415×1
Trans-Brown
1 piece
Windscreen 8 x 4 x 2 with 4 Studs and HandleTrans-BrownPart 92579Element 6507964 or 6254293×1
Trans-Green
1 piece
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Trans-GreenPart 54200Element 6245270 or 42445731 spare in the box×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 71704-1[No Color/Any Color]Part 67938Element 6300472×1
Minifigures
4 figures
Nindroid with Dual Sided Head, Wraps (Legacy)Minifigure, checked as a whole figure×1
Nindroid with Dual Sided Head, Shoulder Armor (Legacy)Minifigure, checked as a whole figure×1
Kai with Hair (Legacy)Minifigure, checked as a whole figure×1
Lloyd (Legacy) - MASTERMinifigure, 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.
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.