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.
Flag 2 x 2 Square with Cavalry Logo PrintWhitePart 2335pr0027Element 4161064 or 4105279×1
Flag on Flagpole, StraightWhitePart 3596Element 4161051 or 4106898×2
Rock
3 pieces
Rock Panel Rectangular 4 x 10 x 6Light GrayPart 6082Element 4161045 or 4106345×2
Rock Panel Triangular 3 x 8 x 7Light GrayPart 6083Element 4161046 or 4106346×1
Animal / Creature Body Parts
2 pieces
Animal Body Part, Horn, CattleWhitePart 87695×2
Containers
2 pieces
Barrel 4 x 4 x 3.5BrownPart 30139Element 4161007 or 4114255×2
Plates Round Curved and Dishes
2 pieces
Plate Round 1 x 1 with Solid StudBlackPart 6141Element 6141261 spare in the box×2
Bricks Curved
1 piece
Brick Arch 1 x 6Light GrayPart 3455Element 345502×1
Projectiles / Launchers
1 piece
Launcher Base, Weapon Cannon Base 2 x 4BrownPart 2527Element 4161404 or 252725×1
Stickers
1 piece
Sticker Sheet for Sets 6769-1, 6762-1[No Color/Any Color]Part 71405Element 4106332×1
Minifigures
10 figures
Cavalry Lieutenant - Hat, White BandanaMinifigure, checked as a whole figure×1
Cavalry Soldier - White HandkerchiefMinifigure, checked as a whole figure×2
Cavalry Lieutenant - HatMinifigure, checked as a whole figure×1
Cavalry SoldierMinifigure, checked as a whole figure×1
Cowboy - Red ShirtMinifigure, checked as a whole figure×1
Cavalry GeneralMinifigure, checked as a whole figure×1
Bandit - Western, Black Jacket, Black Handkerchief, Brown HatMinifigure, checked as a whole figure×1
Bandit - Western, Red Shirt, Black Handkerchief, Brown HatMinifigure, checked as a whole figure×1
Bandit - Western, Green Suit, Top HatMinifigure, 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.