Sten parts blue prints
- Receiver
tube (seamless steel tubing)
- Main
spring cap
- Receiver rear end bushing
- Barrel bushing
- Barrel sleeve
- Barrel sleeve latch & rear sight
- Butt-stock assembly (welded construction)
- Magazine housing
- Magazine latch
Material
: AISI 1010 or equivalent 3mm stock
unhardened
- Magazine housing spacer
Material
: AISI 1010 or equivalent 3mm stock
unhardened
- Barrel
Material
: AISI 4140
Harden to Br 255-277
- Extractor
- Bolt handle
- Selector
- Trigger housing
All Sten
screws are 10-32 thread, round head type
Trigger housing screws are 13mm long
- Bolt
- Trigger housing
- Trigger pin
Trigger
pin may be substituted by spring pin 3.1diam / 26 long
- Firing pin
Material
: drill rod hardened to Rc 50
- Springs
- Sear spring
Lee
Spring Company, NY 11207 - Catalog no. 112/1970
- Tripping lever
- Trigger
Material AISI 1010 or equivalent - 1.6 mm stock
No heat treatment
- Sear
Material AISI 4140 or equivalent - 1.6 mm stock
Hardened to Rc 55
- Magazine
Top view
Front and rear view
Bottom view
- Magazine
follower
Top view
- Magazine
spring
Material : music wire 1.5 mm diam
- Magazine
bottom plate
- Magazine
bottom retainer
Material
: 1 mm mild steel
Retaining lip bent over magazine spring tap at assembly
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