So I just bought a can for use with an MPX and a P226, both with m13.5x1 LH threads. Also have a P365 with 1/2x28 threaded barrel.

The can I bought comes with a 1/2x28 direct thread mount.


I know I need a booster for the pistols, trying to minimize parts and what not and have come across a m13.5x1 lh to 1/2x28 threaded barrel adapter.


Interested to hear thoughts on using a barrel thread adapter on the MPX/P226 along with the included direct thread hub or booster with a 1/2x28 piston.

Would avoid buying a second piston as well as a second hub adapter, saving a bit over $100.


Any downside to the barrel adapter?

like P220Smudge says things are sometimes needlessly complicated. The MPX is not simply metric LH threads it also has the taper that has to be dealt with so its not the same as your 226 barrel. For some reason I thought you were going to go trilug on the mpx? Which is of course the best answer.
But in any case I wouldn't add an adapter on any pistol as you are trying to get the weight down to something managable. So you get your neilsen and just get both a 13.5lh piston and a 1/2-28 one and that's the minimum number of parts for the pistols. And the YH I think you picked is a bit on the porky side anyway.
On the MPX if you want to run direct thread 1/2-28 then (me personally) I would get the ILWT 3 lug for the taper with the 1/2-28 threads and be done with it (this I know works). But for less money you can get the ILWT taper adapter and then run a thread adapter and assuming all the tolerances etc. work that should do the same thing. BUT I'd do a bit of research on that one before I committed to it.

I think you are marking this far more complicated than it needs to be trying to go for some bare minimum number of parts setup. The problem is you have 3 different guns with different barrel requirements. The P226 and P365 require booster pistons, but have different thread pitches. The MPX has the same thread pitch as the P226, but doesn’t need a booster, plus has a tapered barrel. There’s no way around you’ll have to swap some things around to use the same can on all 3 guns. If your can comes with only 1/2x28 direct thread, then it won’t work any anything you have in its current configuration.

I’d recommend:

Either go all M13.5x1 by getting a new barrel for the P365, and then you need a booster housing, M13.5x1 piston, spring, and fixed barrel spacer for use on the MPX. Get a barrel taper adapter or a piston that indexes on the muzzle for the MPX (which should also work on the P226).

Alternately, get a 1/2x28 piston instead of a new barrel for the P365, which is probably the cheaper option. The rest is the same.

The other guys have more experience than I do, but I'll chime in and be the third guy to suggest that it might work out best for you in the long run if you start with the tried and true methods first and keep it simple. This means a 1/2 piston and a M13.5x1 piston, full stop. Yes, you're spending more money, but you're buying the correct, proven equipment for your stuff and won't have to wonder if it'll work right. Or at least, if something does go wrong, it will be more straightforward to diagnose where you're having issues rather than introducing extra potential failure points.

Shooting suppressed is a big cash outlay. Believe me, I get that. I'm one of those guys who likes to think there's always a better way than the "accepted" way, and eventually comes back to the bone-stock standard way of doing it. I like to learn the hard way, I guess. Anyways, that is to say it isn't really the cheapest way to do it if you're looking to save money.

quote:

Originally posted by 911Boss:
Any downside to the barrel adapter?

None.



Until it carbon locks to the inside of your piston and unthreads along with it.