Particle Ionizer (6923-1) is a M:Tron LEGO set released in 1990 with 192 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 2 minifigures and 92 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
192 parts listed · 92 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.)
~298 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 Particle Ionizer
Parts in this set
92 parts · page 1 of 2 · updating…
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Antenna 8H Whip2569 · ×3 · Trans-Neon Green -
![Bar 1 x 3 [Clip / Anti-Stud]](https://cdn.rebrickable.com/media/parts/elements/4141580.jpg)
Bar 1 x 3 [Clip / Anti-Stud]4735 · ×1 · Black -
![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 -
Brick 1 x 13005 · ×2 · Black -
Brick 1 x 162465 · ×2 · Black -
Brick 1 x 23004 · ×2 · Black -
Brick 1 x 23004 · ×2 · Red -
Brick 2 x 3 without Cross Supports3002a · ×1 · Red -
Brick Round 1 x 1 with Fins, Open Stud4588 · ×1 · Trans-Neon Green -
Brick Sloped 45° 2 x 23039 · ×2 · Red -
Brick Sloped 45° 2 x 2 with Black Grill Print3039pr0009 · ×1 · Red -
Brick Sloped 45° 2 x 2 with MTron Logo Print3039pr9992 · ×2 · Red -
Brick Sloped Inverted 34° 3 x 1 without Internal Stopper4287a · ×1 · Red -
Brick Sloped Inverted 45° 2 x 13665 · ×4 · Red -
Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed4871 · ×2 · Red -
Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 Recessed4854 · ×1 · Red -
Brick Special 1 x 1 Studs on 4 Sides4733 · ×1 · Black -
Brick Special 1 x 1 with Headlight4070 · ×2 · Black -
Brick Special 1 x 1 with Headlight4070 · ×2 · Red -
Brick Special 1 x 2 with Pin2458 · ×1 · Black -
Brick Special 1 x 2 x 2/3 with Studs on Sides4595 · ×2 · Light Gray -
Brick Special 1 x 2 x 2/3 with Studs on Sides4595 · ×2 · Black -
Brick Special 2 x 4 x 2 with Studs on Sides2434 · ×1 · Red -
![Brick Wedged, Sloped Inverted 4 x 4 Triple [2 Connections between Front Studs]](https://cdn.rebrickable.com/media/parts/elements/4258397.jpg)
Brick Wedged, Sloped Inverted 4 x 4 Triple [2 Connections between Front Studs]4855 · ×1 · Red -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/618849.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×6 · Trans-Neon Green -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/458926.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×3 · Black -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/458921.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×1 · Red -
![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 -
Engine, Strakes, 2 x 2 Thin Top Plate4229 · ×2 · Black -
Equipment Goblet / Glass2343 · ×2 · Light Gray -
![Equipment Radio [Compact Handle]](https://cdn.rebrickable.com/media/parts/ldraw/0/3962a.png)
Equipment Radio [Compact Handle]3962a · ×1 · Black -
Fence Lattice 1 x 4 x 13633 · ×1 · Black -
Flexible Hose 8.5L with Tabless Ends (Ends same color as Tube)73590c01a · ×2 · Black -
Hinge Bar with 3 Fingers and End Stud (Control Lever)2433 · ×1 · Black -
Hinge Brick 1 x 2 Base3937 · ×5 · Black -
Hinge Brick 1 x 2 Top Plate Thin3938 · ×5 · Red -
Hinge Panel 2 x 4 x 3 1/3 with Black/Red MTron Print2582pr0001 · ×2 · Light Gray -
Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs4276b · ×1 · Red -
![Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs]](https://cdn.rebrickable.com/media/parts/elements/4179194.jpg)
Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs]4275b · ×1 · Red -
![Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs]](https://cdn.rebrickable.com/media/parts/elements/427526.jpg)
Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs]4275b · ×1 · Black -
Hinge Plate 1 x 2 with 3 Fingers On Side2452 · ×1 · Red -
Hinge Tile 1 x 2 1/2 with 2 Fingers on Top4531 · ×1 · Black -
Hinge Tile 1 x 2 1/2 with 2 Fingers on Top4531 · ×1 · Red -
Hinge Vehicle Roof Holder 1 x 44315 · ×3 · Red -
Magnet Cylindrical73092 · ×2 · Black -
Magnet Holder 2 x 32607 · ×1 · Red -
Magnet Holder Tile 2 x 2 - Short Arms2609a · ×1 · Black