9mm BSP SUBMACHINEGUN

"For Informational Purposes Only" - S.L.



The design drawings and instructions found HERE illustrate the construction of a 9mm submachine gun utilizing off the shelf ‘British Standard Pipe’(BSP) Fittings. BSP fittings, commonly known as ‘Malleable Iron Fittings’, are readily available from most good trade plumbing outlets.

MATERIALS REQUIRED:

1. 1-1/4” BSP tube x 12 ½” length.
2. 2.5mm steel sheet (x2) 9-¾” length.
3. 40x20 x 2.5mm tube.
4. 34.93x 15.88 x 1.6mm tube
5. 20g x 3/8” spring steel.
6. 1/8” steel plate.
7. ¼” “ “
8. ¼” “ “
9. 5/8”x 14g steel sheet.
10. 6mm studding connectors x 2.
11. 6mm cap screws x 4.
12. Dowel pins, 4 & 6 mm dia.
13. 1” x 1/8” round tube.
14. 35mm dia’ rubber stock.
15. 1 ¼” x ½” BSP Reducer.
16. ½” BSP Socket.
17. ½” BSP Lock Nut.
18. ½” BSP Threaded Tube.
19. 1 ¼” BSP Cap.
20. 15.88 x 3. 25mm Hydraulic tube.
21. Assorted nuts and bolt.



1. 15.88 x 3.25mm tubing.
2. ½” BSP Socket.
3. ½” BSP nipple.
4. ½” BSP lock nut
5. 1 ¼” x ½” BSP reducer.
6. Magazine Catch.
7. Magazine.
8. Trigger.
9. Trigger Bar.
10. Bolt.
11. Sear.
12. Mainspring.
13. Stock anchor point.
14. 1” Diameter x 1/8” tube.
15. Rubber buffer.
16. 1 ¼” BSP pipe Cap.

- Legal Note -

The weapon shown in the referenced document has not been built and is a prototype design only. All photos depict plumbing / hardware products and components which are shown in their unmodified “as bought” condition.

"For academic study purposes only."

- STORMBRINGER SENDS