Vector Detector (6877-1) is a M:Tron LEGO set released in 1990 with 62 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing M:Tron 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 37 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
1990 (36 years ago — may be retired)
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Catalog scale
62 parts listed · 37 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.)
~85 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 Vector Detector
Parts in this set
37 parts · updating…
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Antenna 8H Whip2569 · ×2 · Trans-Neon Green -
![Box 2 x 2 x 2 [Solid Studs]](https://cdn.rebrickable.com/media/parts/ldraw/4/4345a.png)
Box 2 x 2 x 2 [Solid Studs]4345a · ×1 · Red -
Box 2 x 2 x 2 Door with Slot and Black/Red MTron Print4346pr0004 · ×1 · Light Gray -
Bracket 8 x 2 x 1 1/34732 · ×1 · Black -
Brick Sloped 33° 3 x 23298 · ×1 · Red -
Brick Sloped 33° 3 x 2 with MTron Logo Print3298pr0026 · ×1 · Red -
Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin3747a · ×2 · Red -
Brick Special 1 x 2 with Pin2458 · ×1 · Red -
Brick Special 1 x 2 x 2/3 with Studs on Sides4595 · ×2 · Light Gray -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/618849.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×2 · Trans-Neon Green -
![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 -
![Equipment Radio [Compact Handle]](https://cdn.rebrickable.com/media/parts/ldraw/0/3962a.png)
Equipment Radio [Compact Handle]3962a · ×1 · Black -
Hinge Brick 1 x 2 Base3937 · ×1 · Red -
Hinge Brick 1 x 2 Top Plate Thin3938 · ×1 · Black -
Magnet Cylindrical73092 · ×2 · Black -
Magnet Holder 2 x 32607 · ×1 · Red -
Magnet Holder Tile 2 x 2 - Short Arms2609a · ×1 · Black -
Panel 3 x 2 x 62466 · ×1 · Trans-Neon Green -
Plate 1 x 13024 · ×2 · Red -
Plate 1 x 23023 · ×5 · Red -
Plate 1 x 23023 · ×2 · Black -
Plate 2 x 23022 · ×1 · Black -
Plate 2 x 33021 · ×1 · Red -
Plate 2 x 43020 · ×1 · Black -
Plate 2 x 63795 · ×1 · Red -
Plate 2 x 83034 · ×1 · Black -
Plate Round 1 x 1 with Solid Stud6141 · ×2 · Trans-Neon Green -
![Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]](https://cdn.rebrickable.com/media/parts/elements/408121.jpg)
Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]4081b · ×2 · Red -
![Plate Special 1 x 1 with Clip Vertical [Thick U Clip]](https://cdn.rebrickable.com/media/parts/elements/408526.jpg)
Plate Special 1 x 1 with Clip Vertical [Thick U Clip]4085c · ×2 · Black -
![Plate Special 1 x 1 with Clip Vertical [Thick U Clip]](https://cdn.rebrickable.com/media/parts/elements/408521.jpg)
Plate Special 1 x 1 with Clip Vertical [Thick U Clip]4085c · ×2 · Red -
![Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment]](https://cdn.rebrickable.com/media/parts/elements/383926.jpg)
Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment]3839b · ×1 · Black -
Tail 4 x 2 x 23479 · ×2 · Black -
Tile 1 x 1 with Groove3070b · ×1 · Black -
Tile 1 x 2 with Red and Yellow Control Panel Print (Original)3069bpr0048 · ×1 · White -
Wedge Plate 8 x 4 Wing Right without Stud Notch3934a · ×2 · Black -
Wedge, Plate 8 x 4 Wing Left without Underside Stud Notch3933a · ×2 · Black -
Wedge, Plate 8 x 8 with 4 x 4 Cutout4475 · ×1 · Red