Enclosures and housings
9mm Spring-Piston Breech Assembly
- Bounding box
- 180.0 × 40.0 × 39.0 mm
- Engine
- Precision B-rep
- Parameters
- 32
- Published
- November 4, 2026
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The prompt
1. CYLINDER HOUSING & MAINSPRING: - Heavy-duty steel compression spring housed within the main cylinder bore. - Linear travel vector arrows ($\rightarrow$) showing piston forward momentum upon release. 2. BREECH & 9MM PROJECTION CHAMBER: - Precision-molded polymer barrel bore dimensioned specifically to seat and launch a 9mm-diameter projectile or casing. - Feed ramp and chamber throat clearly outlined with tight tolerance clearances. 3. SEAR & TRIGGER ENGAGEMENT: - Spring-loaded sear locking into the piston rod notch at the rearward cocked position. - Pivot pin and torsion spring details on the trigger lever. [ANNOTATIONS & CALLOUTS] * "FIG. 2.1: MAINSPRING COMPRESSION CHAMBER (LOADED POSITION)" * "FIG. 2.2: 9MM PROJECTILE BREECH & BORE ALIGNMENT" * "FIG. 2.3: SEAR LOCK & TRIGGER RELEASE INTERFACE" * Dimension lines showing barrel inner diameter (9mm nominal tolerance) and spring compression stroke length.
Parameters
| Name | Value | Range |
|---|---|---|
| Housing Length | 120 mm | 60 – 250 |
| Housing Outer Dia | 28 mm | 16 – 60 |
| Housing Bore Dia | 22 mm | 10 – 50 |
| Closed Rear Cap | 6 mm | 2 – 20 |
| Spring Outer Dia | 20 mm | 8 – 45 |
| Spring Wire Dia | 1.5 mm | 0.5 – 4 |
| Free Length | 90 mm | 30 – 200 |
| Compressed Installed Length | 32 mm | 12 – 120 |
| Piston Dia | 18 mm | 6 – 45 |
| Piston Length | 80 mm | 20 – 200 |
| Notch From Rod Rear | 10 mm | 2 – 50 |
| Cocking Notch Dia | 15 mm | 4 – 40 |
| Cocking Notch Width | 4 mm | 1 – 20 |
| Breech Block Length | 60 mm | 20 – 150 |
| Breech Block Width | 40 mm | 15 – 90 |
| Breech Block Height | 30 mm | 12 – 80 |
| Nominal Bore Dia | 9 mm | 3 – 25 |
| Chamber Throat Dia | 10.5 mm | 3 – 30 |
| Chamber Throat Depth | 8 mm | 1 – 40 |
| Feed Ramp Length | 22 mm | 4 – 60 |
| Feed Ramp Width | 12 mm | 4 – 40 |
| Sear Lever Length | 25 mm | 10 – 60 |
| Sear Lever Width | 8 mm | 3 – 25 |
| Sear Lever Thickness | 4 mm | 1.5 – 12 |
| Trigger Lever Length | 35 mm | 12 – 80 |
| Trigger Lever Width | 10 mm | 3 – 30 |
| Trigger Lever Thickness | 6 mm | 2 – 20 |
| Pivot Pin Dia | 3 mm | 1 – 10 |
| Pivot Pin Length | 20 mm | 6 – 50 |
| Torsion Spring OD | 6 mm | 3 – 20 |
| Torsion Spring Wire | 0.8 mm | 0.3 – 3 |
| Torsion Spring Coil Length | 4.5 mm | 1.5 – 20 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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