A chap on the British WWII airsoft forum asked if anyone had made a suppressor for their Sten, so I obliged to do a post on my prototype silencer!
As with all my Sten kits (released and in development), I wanted to make this a temporary attachment that could be removed when not wanted.
So, how did I make this?
One piece of 40mm OD (Outside Diameter) mild steel pipe makes up the body of the suppressor, nothing fancy about this at all! Inside this prototype there are two square pieces of plywood with holes through the centre.
These slide over the outer barrel of the Sten and fit very snugly indeed. This makes for a very solid silencer as it has all of the strength of the inner barrel to support it.
The end cap is a piece of ash, cut to rough shape. I heated a spare section of 40mm tube and used it to cauterise the rough cut cap into shape. Now I have the lathe of course I’d just turn it on that! A little epoxy will secure it in place.
As the weight of the suppressor is taken by the outer barrel, all that is needed to keep it in place is a retaining screw. I used the screw hole that the heat guard uses on the standard ASG Sten.
A small piece of brass flat bar bridges the gap, obviously this could also be steel.
Once the canvas heat cover is on, it camouflages this admittedly unsightly joint!
On this prototype I’ve just stitched the buttonholes roughly, I’ll be putting in some brass eyelets when I have bought a punching kit!
One thing to bear in mind with this conversion, it is aesthetic ONLY. In no way will this quieten your AEG down as most of the sound is created in the motor and doesn’t really travel down the barrel.
The finish is a combination of enamel paint and matte lacquer so that the metal and wood parts match up.
The production version of this will differ in a few ways:
1. The end cap will be entirely turned on a lathe for shaping
2. The barrel supports will either be plastic or turned round so that they fill the entirety of the barrel
3. The heat shield will have brass eyelets instead of sewn ones
Production versions will be around £50, a post will be forthcoming on completion of the first model! If you fancy a version of this, do drop us a line on: firstname.lastname@example.org!