Gemtech does a great job, instead of an adapter the barrel is bored out & a threaded sleeve installed. Using this technique you have rifling all the way to the end of the barrel.

I bought my barrel from hi desert dog. Rather than relate my 7 paragraph horror story - don't get a high desert dog barrel.

As I work through my gun project list I'll eventually get around to doing my 21A right - with a Gemtech sleeved barrel.

ETA: Originally it was bought as a novelty item & for CCW suppressed. Often times when I take new young shooters out the GSG 1911's, Sig Mosquito, and P22's get left on the table while the 21A gets a good work out.

PHD is a knowledgeable gentleman and an all around good dude. If you have a hammer & correct punch you can get the barrel off pretty easy. Note it is a tapered pin.

http://www.ar15.com/forums/t_2_246/210537_Beretta_21A_Bobcat_barrel_threading_.html

As an after-thought - I have several different 22LR suppressors. I bought a Thompson Machine wasp specifically for the 21A. I've been quite happy with it - it is meant as a wet suppressor. I normally get 2-3 magazines of quiet before adding more wire pulling gel.

I just like the idea of a little extra rifling.

If you go that direction I'd be interested in a fit/finish/range report.

I sent mine to Gemtech.

Very happy. Rather than create a thread adapter, they install an extended barrel sleeve. So really, you're getting a new bore AND threading for that price.



Seems to be most reliable with Aguila SSS. The shorter case seems to extract and eject more reliably. No baffle strike issues (been through a brick or so of the SSS, several bricks of normal .22LR).

I bought one awhile back from a local pawn shop that had been the shop owner's suppressor host. He had had a local 'smith do the barrel by doing the same thing Gem-Tech does. That part worked great. Unfortunately, it wasn't too long after I bought it that the frame cracked at the barrel hinge. I tried getting hold of Beretta to see what I could do about getting it replaced, but didn't get a response from them until more than a year later. (Even then, the only response was a questionairre, asking how I would rate my experience with Beretta customer service. Suffice to say I doubt they liked my response.) I ended up disassembling the entire gun and selling the threaded barrel, mags, grips and assorted parts here on the EE.

FYI, I used a YHM Mite on it and the previous owner also used a pretty lightweight aluminum can. Apparently, the frequent opening with the added weight on the end of the barrel caused stress that resulted in a cracked frame, as far as I can tell.

gotta agree with this. check out his here: http://accurateordnance.com/cgi-bin/imcart/read.cgi?article_id=16&sub=4

I likewise have a hi desert dog barrel... makes a fine host for my current .22 suppressor.

Accurate Ordinance.