Alien Moon Stalker (6940-1) is a Classic Space LEGO set released in 1986 with 268 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Classic Space sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 2 minifigures and 76 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
1986 (40 years ago — may be retired)
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Catalog scale
268 parts listed · 76 inventory lines tracked
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Minifigures
2 in this set's inventory — verify completeness when buying used
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~470 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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Minifigures in Alien Moon Stalker
Parts in this set
76 parts · page 1 of 2 · updating…
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Antenna 1 x 4 with Rounded Top3957a · ×2 · Trans-Red -
Arm Grab Jaw4221 · ×2 · Black -
Arm Grab Jaw Holder, 3 Fingers4220 · ×1 · Light Gray -
Arm Holder Brick 2 x 2 without Hole and 1 Arm792c01 · ×1 · Light Gray -
Arm Piece Straight with 2 and 3 Fingers3612 · ×5 · Light Gray -
![Box 2 x 2 x 2 [Solid Studs]](https://cdn.rebrickable.com/media/parts/ldraw/7/4345a.png)
Box 2 x 2 x 2 [Solid Studs]4345a · ×2 · Light Gray -
Box 2 x 2 x 2 Door with Slot4346 · ×2 · Light Gray -
Brick 1 x 23004 · ×5 · Light Gray -
Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support3010a · ×9 · Light Gray -
Brick 2 x 2 without Inside Ridges3003a · ×8 · Light Gray -
Brick 2 x 43001 · ×2 · Light Gray -
Brick Round 2 x 2 with Axle Hole3941 · ×2 · Black -
Brick Round 2 x 2 with Axle Hole3941 · ×6 · White -
Brick Round Corner 2 x 2 Macaroni with Stud Notch3063b · ×8 · Light Gray -
Brick Sloped 33° 3 x 2 with Classic Space Logo Print3298pr0039 · ×1 · Light Gray -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×12 · Light Gray -
Brick Sloped 45° 2 x 23039 · ×3 · Light Gray -
Brick Sloped 45° 2 x 2 with Black Grill Print3039pr0009 · ×4 · Light Gray -
Brick Sloped 45° 2 x 2 with Computer Panel Print3039pr9994 · ×1 · Light Gray -
Brick Sloped 45° 2 x 43037 · ×2 · Light Gray -
Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin3747a · ×6 · Light Gray -
Brick Special 1 x 1 with 3 Speakers / Loudspeakers / Space Positioning Rockets3963 · ×2 · Black -
Brick Special 1 x 1 with Headlight4070 · ×8 · Light Gray -
Brick Special 1 x 2 x 2/3 with Studs on Sides4595 · ×4 · Black -
Brick Special 2 x 2 with Pin and No Axle Hole4730 · ×2 · Light Gray -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/618841.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×2 · Trans-Red -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/458926.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×2 · Black -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/458901.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×2 · White -
Cone 2 x 2 x 2, Open Stud3942c · ×2 · Black -
Cone 2 x 2 x 2, Open Stud3942c · ×2 · White -
![Dish 2 x 2 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/474026.jpg)
Dish 2 x 2 Inverted [Radar]4740 · ×2 · Black -
![Dish 2 x 2 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/4142995.jpg)
Dish 2 x 2 Inverted [Radar]4740 · ×2 · Trans-Red -
![Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders]](https://cdn.rebrickable.com/media/parts/elements/347526.jpg)
Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders]3475b · ×2 · Black -
Equipment Control Panel2342 · ×2 · Light Gray -
Equipment Control Panel2342 · ×1 · Black -
Equipment Goblet / Glass2343 · ×2 · Black -
Flexible Hose 8.5L with Tabless Ends (Ends same color as Tube)73590c01a · ×2 · Light Gray -
Glass for Window 4 x 4 x 3 Roof4448 · ×4 · Black -
Glass for Window 4 x 4 x 3 Roof4448 · ×4 · Trans-Green -
Hinge Plate 2 x 4 with Articulated Joint - Female3640 · ×2 · Light Gray -
Hinge Plate 2 x 4 with Articulated Joint - Male3639 · ×2 · Light Gray -
Hinge Vehicle Roof Holder 1 x 44315 · ×1 · Light Gray -
Lever Small Base with Black Lever298c02 · ×4 · Light Gray -
Lever Small Base with White Lever298c04 · ×2 · White -
![Panel 1 x 2 x 1 [Square Corners]](https://cdn.rebrickable.com/media/parts/elements/486502.jpg)
Panel 1 x 2 x 1 [Square Corners]4865a · ×4 · Light Gray -
Plate 1 x 13024 · ×10 · Trans-Red -
Plate 1 x 13024 · ×6 · Trans-Green -
Plate 1 x 23023 · ×2 · Black