Form 1 Suppressor Stuff

I'd mentioned SD Tactical previously.  They make a "B tube" size "solvent trap" in titanium, suitable for conversion to a sound suppressor when in possession of an approved Form 1.

The SDTA forums have some information on builds.

J&S Tactical makes jigs for forming the B-tube freeze plugs; however, those tools cost more than the tube!

Another board dedicated to Form 1 cans has a list of freeze plug dimensions and part numbers, as well as valve spring retainers (VSR) that are apparently often used for a blast baffle.  Another post has weights of the B size tubes and end caps.

Other solvent trap makers include Apogee and Diversified Machine (who only takes orders via email).

There was mention of "reflex" suppressors on the boards.  One description I found had a picture but it still wasn't clear exactly how it differs from non-reflex.  Another one clarified it as basically jamming the barrel up in the can.  And another showed an adapter for a reflex-type design.

One concern of mine was multiple mounts.  One solution:

You need another use for the adapter, if you're worried about possession of suppressor parts. 

For me, I built a set of three cans, with three different lengths and calibers. The thread pitch and length for all adapters is identical. So, I will always have three complete cans, but any of them could be mounted on 1/2-28, 5/8-24 or a YHM mount. 

If you had a piece of tube that didn't suppress sound, like the MAAD brake I linked, it could "hold" a mount and an end cap, so that each piece is always in use.

I like that better than the set screw solution.

There's also JM Performance Fittings, which sells "storage cups" that fit in flashlight bodies.  They make a B-tube model, but unfortunately it's only aluminum.