[andy]

Ruger .22 autopistol configuration. Shorten barrel to 2.5", and reduce its OD to 3/8", all but about .4", in front of receiver. That area is left full diameter, and threaded 40 TPI, to mount the can. The barrel's OD is surrounded by screenwire donuts. I tried the can with and without such "wrap" of the barrel, and the donuts around the barrel definitely added a bit of "quiet". The front .5" of the can has a chunk of .270 barrel welded into it. So anyone looking down the front of the "muzzle" sees rifling, not baffles. Nobody ever seems to notice that the "bore' looks a bit oversized in ID. The can is blued, and the front sight is mounted, and presto, a canned .22 pistol that nobody notices. 7/8" OD, .049" wall tubing does the trick.

Did the above on the 5" version, too, but it wasn't nearly as quiet, and got uselessly "loud" in less than 100 rds. The extra length of can is a big help to utility. The extra sight-radius certainly doesn't hurt accuracy, either.

 

[John in AR]

Having one made now, on a Ruger Mk2. "Can" looks like a 7" bull barrel, but from the muzzle end, it's apparent that something's different; primarily due to the two 'dimples' on the front for the disassembly spanner wrench.

How do you hide the seam where the last baffle meets the outer tube at the muzzle end..? Is the .270 barrel 'chunk' the same OD as the tube & welded back, away from the muzzle?

 

[andy]

depends upon the barrel u start with.

I had to weld a "spacer" washer in between on the ones I made. The .270 barrel hunk was turned to the same OD as the .22 barrel, and one final screenwire donut surrounded it. Cleaning,-repacking is done from the rear, or else the entire upper is just left laying in the carb Cleaner solvent overnight, blow out with air hose. There's no reason to shoot the canned version a lot, anyway. Practice with a "loud" version, save the can's service life for when silence MATTERS. Have to CASEHARDEN barrel's threaded area, and threaded part of can, or else unscrewing and rescrewing means that the front sight will be at an angle, not straight up and down. A LITTLE stretching-wear of the threads will do that, ya know.