Rocket (40103-1) is a Monthly Mini Model Build LEGO set released in 2014 with 48 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Monthly Mini Model Build sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 24 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
2014 (12 years ago — may be retired)
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Catalog scale
48 parts listed · 24 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
Digital booklet available on this page — use it to verify bag contents
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Shipping weight (est.)
~88 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
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Building instructions
Official LEGO instructions — read on BrickID
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Parts in this set
24 parts · updating…
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Antenna 1 x 4 with Flat Top3957b · ×1 · White -
Brick Arch 1 x 43659 · ×1 · White -
Brick Round 2 x 2 with Axle Hole3941 · ×4 · Red -
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)54200 · ×6 · Trans-Brown -
Brick Special 1 x 1 Studs on 4 Sides4733 · ×3 · Dark Bluish Gray -
Brick Special 1 x 1 with Headlight4070 · ×2 · White -
Cone 2 x 2 x 2, Open Stud3942c · ×1 · White -
Plate 1 x 23023 · ×1 · Trans-Clear -
Plate 1 x 23023 · ×2 · Light Bluish Gray -
Plate 2 x 43020 · ×1 · Black -
Plate 2 x 83034 · ×1 · Light Bluish Gray -
Plate Round 1 x 1 with Solid Stud6141 · ×3 · Trans-Red -
Plate Round 1 x 1 with Solid Stud6141 · ×1 · Trans-Green -
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)4032a · ×3 · White -
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)15573 · ×2 · Black -
Plate Special 2 x 2 with Groove and Center Stud (Jumper)87580 · ×1 · Black -
![Pneumatic T-Piece (T Bar) [New Style]](https://cdn.rebrickable.com/media/parts/elements/4211508.jpg)
Pneumatic T-Piece (T Bar) [New Style]4697b · ×1 · Light Bluish Gray -
![Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts]](https://cdn.rebrickable.com/media/parts/elements/4142125.jpg)
Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts]4476b · ×1 · White -
Technic Axle 2 Notched32062 · ×3 · Red -
![Technic Axle and Pin Connector Angled Triple [120° Offset]](https://cdn.rebrickable.com/media/parts/elements/6005755.jpg)
Technic Axle and Pin Connector Angled Triple [120° Offset]10288 · ×1 · Dark Brown -
Technic Axle Pin with Friction Ridges Lengthwise43093 · ×1 · Blue -
![Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]](https://cdn.rebrickable.com/media/parts/elements/4185661.jpg)
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]41669 · ×3 · Red -
Tile 1 x 363864 · ×4 · Light Bluish Gray -
Tile Round 2 x 2 with Fine Mesh Grill Print4150pr0022 · ×1 · Light Bluish Gray