looking for someone to identify a sound moderator

[saddler]

Pics to folloy shortly.

I've got a sound moderator I may need to move on, but first need to find out what make & model it is.

Proof marks state .223.
Thread is 1/2"x28 (UNEF) - same as AR15 flash-hider
The design is over barrel:
I.d is approx 23mm, depth for barrel just under 8 1/2" (aye, mixing units!!)
o.a.l. about 32cm, dia. 50mm.
Front section about 12cm long screws off.
Weight 840g

All the bushings etc. are held in by grub screws, so the design can be fully stripped down to individual parts (for cleaning or modification)
Magnet not attracted to it (been using SimG's aftershave as a carbon remover)
...so main body is stainless & a lot of the internals are aluminum...though the threaded bushing seems to be steel

Any ideas would be great...as keen to find out what it is as I've been wondering since I got it....

Answers on a postcard....

Ta

[saddler]

No ideas?

Ho hum, have a look at these then...

Overall view, muzzle to the right

View of rear

View of front

[saddler]

Internal view, looking forwards to exit hole

Internal, looking to ward the rear sleeve/expansion chamber area

[Demonic69]

Looks home made to me!

[saddler]

Mmm....dunno.

Maybe a prototype?
VERY well made. ..anf the view towards the front shows some unusual features.

Proof house marked for .223

[ovenpaa]

What does it look like inside?

[saddler]

What does it look like inside?

See the 4th & 5th photos.
Not fully stripped it down yet.

Can take more internal photos if it may help.
The outer body may have been painted when new too (judging by the ends)

[DL.]

That looks like it bears a bit of similarity to the west country guns / whole shooting match A10, a prototype maybe?