Missing Piece Checker: 30591 Titanium Mini Mech

Checking

30591 Titanium Mini Mech

77 pieces in 30 part and color combinations.

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. This set comes with 3 spare pieces, marked on each row of the checklist. One may be the piece you need.
The floor and your building area. Check under furniture, the chair and the edges of your building surface.

Piece checklist

Dark Bluish Gray 18 pieces

Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] Dark Bluish Gray Part 48729b Element 6278155 or 4579234 1 spare in the box ×1
Brick 1 x 2 Dark Bluish Gray Part 3004 Element 4211088 ×2
Brick Sloped 45° 2 x 1 Double with Inside Stud Holder Dark Bluish Gray Part 3044c Element 4226221 ×2
Brick Sloped Inverted 45° 2 x 1 Dark Bluish Gray Part 3665 Element 4211096 ×2
Flag 2 x 2 Trapezoid with Flat Area between Clips Dark Bluish Gray Part 44676 Element 4215387 ×2
Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×2
Plate Special 1 x 2 with 5.9mm Towball Socket and Towball Dark Bluish Gray Part 14419 Element 6414554 or 6338166 ×4
Technic Steering Gear with 3 Towball Joints, Compact Dark Bluish Gray Part 15460 Element 6359227 or 6055629 ×1
Tile Special 1 x 1 with Clip with Rounded Edges Dark Bluish Gray Part 15712 Element 6344022 or 6071226 ×2

Black 10 pieces

Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×1
Plate 2 x 2 Corner Black Part 2420 Element 242026 ×4
Plate 3 x 3 Black Part 11212 Element 6174917 ×1
Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 ×4

Light Bluish Gray 9 pieces

Brick Special 1 x 2 x 2/3 with Studs on Sides Light Bluish Gray Part 4595 Element 6681658 or 4211502 ×1
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Light Bluish Gray Part 60897 Element 6296894 or 4613956 ×4
Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×4

Sand Blue 4 pieces

Tile 1 x 2 with Groove Sand Blue Part 3069b Element 6142505 or 4170251 ×4

Trans-Light Blue 3 pieces

Plate 1 x 1 Trans-Light Blue Part 3024 Element 6513964 or 6252043 1 spare in the box ×3

Pearl Gold 2 pieces

Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] Pearl Gold Part 21459 Element 6116596 ×2

Blue 1 piece

Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×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.

LEGO Missing Piece Checker

30591 Titanium Mini Mech

Before you call it missing

Your missing list

Piece checklist