My step by step guide to building a California legal semi-auto STEN Mk III. Built up from a STEN Mk III parts kit from WWII onto a reduced diameter semi-auto STEN tube.

Coming soon...

 

What a STEN Mk III Parts kit looks like.

What to look out for when purchasing a STEN parts kit online.

 

 

Indianapolis Ordnance

Semi-auto STEN conversion parts review.

(STEN tube, semi-auto bolt, and semi auto)

Quick overview of the IO Semi-auto tube, barrel, and conversion kit.

 

 

Demilling the STEN MKIII kit - by Caimen

1. Tools required
2. Identifying the parts
3. Step #1 - demilling magazine well.
   1. Magwell.
4. Step #2 - demilling barrel assembly.
   1. handguard.
   2. rear barrel trunnion.
   3. front barrel trunnion.
   4. front sling swivel.
   5. removing rivets from trunnions.
5. Step #3 - demilling trigger housing.
   1. removing center tube remnants.
   2. removing rear tube remnants.
   3. removing tube remnants from rear trigger/tube housing.
   4. removing tube remnants from trigger tabs.

 

Links:

	Indianapolis Ordnance: 80% STEN Mk III semi-auto reduced diameter tube receiver, 16" barrel, semi-auto bolt assembly, and miscellaneous parts.
	MonsterMan Grip (modified).