Sub Orbital Guardian (6878-1) is a Blacktron II LEGO set released in 1991 with 75 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Blacktron II sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 1 minifigure and 36 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
1991 (35 years ago — may be retired)
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Catalog scale
75 parts listed · 36 inventory lines tracked
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Minifigures
1 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.)
~103 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 Sub Orbital Guardian
Parts in this set
36 parts · updating…
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Antenna 1 x 4 with Rounded Top3957a · ×2 · Black -
Antenna 8H Whip2569 · ×2 · Trans-Neon Green -
![Box 2 x 2 x 2 [Solid Studs]](https://cdn.rebrickable.com/media/parts/ldraw/15/4345a.png)
Box 2 x 2 x 2 [Solid Studs]4345a · ×1 · White -
Box 2 x 2 x 2 Door with Slot with Controls Print4346pr0003 · ×1 · Black -
Brick 1 x 13005 · ×2 · White -
Brick 1 x 43010 · ×2 · Black -
Brick Sloped 33° 3 x 14286 · ×2 · Black -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×4 · Black -
Brick Sloped 45° 2 x 23039 · ×2 · Black -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366026.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×2 · Black -
Brick Special 2 x 4 x 2 with Studs on Sides2434 · ×1 · Black -
![Dish 2 x 2 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/3006349.jpg)
Dish 2 x 2 Inverted [Radar]4740 · ×2 · Trans-Neon Green -
![Dish 4 x 4 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/3006549.jpg)
Dish 4 x 4 Inverted [Radar]3960 · ×2 · Trans-Neon Green -
Hinge Brick 1 x 2 Base3937 · ×1 · Black -
Hinge Brick 1 x 2 Top Plate Thin3938 · ×1 · White -
Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs4276b · ×2 · White -
Hinge Plate 1 x 2 with 3 Fingers On Side2452 · ×2 · Black -
Hinge Vehicle Roof 4 x 44213 · ×1 · Black -
Hinge Vehicle Roof Holder 1 x 44315 · ×1 · Black -
![Panel 1 x 2 x 2 [Solid Studs]](https://cdn.rebrickable.com/media/parts/elements/4113021.jpg)
Panel 1 x 2 x 2 [Solid Studs]4864a · ×1 · Black -
Panel 3 x 2 x 62466 · ×2 · Trans-Neon Green -
Plate 1 x 43710 · ×1 · Black -
Plate 1 x 63666 · ×2 · Black -
Plate 2 x 63795 · ×4 · Black -
Plate Round 1 x 1 with Solid Stud6141 · ×2 · White -
Plate Round 1 x 1 with Solid Stud6141 · ×2 · Trans-Neon Green -
Plate Special 1 x 4 Offset with Bar Holes4590 · ×1 · Black -
Plate Special 6 x 6 Octagonal with Square Hole and 4 Clips (Boat Mast Platform)2539 · ×1 · Black -
![Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts]](https://cdn.rebrickable.com/media/parts/elements/4141086.jpg)
Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts]4476b · ×1 · Black -
Tile 1 x 2 with Red and Yellow Control Panel Print (Original)3069bpr0048 · ×1 · White -
Tile Special 1 x 2 Grille with Bottom Groove2412b · ×1 · White -
Tile Special 1 x 2 with Handle2432 · ×1 · White -
Turntable 2 x 2 Plate - Top3679 · ×6 · Light Gray -
Turntable 2 x 2 Plate, Base3680 · ×6 · White -
Wedge Plate 8 x 4 Wing Left3933 · ×1 · Black -
Wedge Plate 8 x 4 Wing Right with Stud Notch3934 · ×1 · Black