Probably a Dumb Question

[CSA]

I’m getting an omega 9k and I am going to mount to a MPX, which is piston action, three lug and a Glock 19 direct thread 1/2x 28. I also might direct thread onto MPX to 1/2 x 28, aftermarket barrel. Do I need pistons for one or either. I’m new to pistol cans so I guess I’m being a little dense just wanting to do it right, thanks.

 

[StateLine]

If I'm reading you right, you'll need a piston for your Glock. Direct thread won't run on a recoil operated pistol. The direct thread on the MPX or the three lug/piston on the MPX are both viable options for a gas/piston/blowback platform.

I think this is correct, but if not I'm sure someone will chime in shortly.

 

[CSA]

If I'm reading you right, you'll need a piston for your Glock. Direct thread won't run on a recoil operated pistol. The direct thread on the MPX or the three lug/piston on the MPX are both viable options for a gas/piston/blowback platform.

I think this is correct, but if not I'm sure someone will chime in shortly.

Ok thanks for helping clear that up.

 

[ShooterG]

piston with a fixed barrel spacer is another option for the MPX. It's also the cheapest option if you need the same thread pattern piston for your glock.

 

[CSA]

piston with a fixed barrel spacer is another option for the MPX. It's also the cheapest option if you need the same thread pattern piston for your glock.

I actually got an aftermarket Martel for it that has three lug build on and has 1/2x28 thread. The barrel is 4.5” so do I need a piston for that because it is not blowback operated. Sorry this kind of confused me lol.

 

[ShooterG]

I actually got an aftermarket Martel for it that has three lug build on and has 1/2x28 thread. The barrel is 4.5” so do I need a piston for that because it is not blowback operated. Sorry this kind of confused me lol.

You’re talking 2 different mounts - 1/2x28 or three lug? I think you are saying your mpx barrel is 1/2x28 with a three lug adapter. In that case you need the three lug mount for the omega. Or skip that and just run the 1/2x28 piston with a fixed barrel spacer threaded onto the 1/2x28 MPX barrel. The same piston will be used with the spring for your glock.

 

[CSA]

Ok here is the barrel I’m talking about for the MPX. The lugs are made into the barrel. I’ll probably just run a three lug on it to keep it simple and switch to piston when I run Glock.

 

[ShooterG]

Ok here is the barrel I’m talking about for the MPX. The lugs are made into the barrel. I’ll probably just run a three lug on it to keep it simple and switch to piston when I run Glock.
View attachment 1404045

Ah, its got threads after the 3-lug. Yes, run it either way you want. Three-lug if you want to spend the extra money on the mount.

 

[CSA]

Ah, its got threads after the 3-lug. Yes, run it either way you want. Three-lug if you want to spend the extra money on the mount.

Yea I kind of want it recessed back in the hand guard so I might just stick to 3 lug. I just really didn’t understand the whole piston thing and if I needed a piston if I threaded on the MPX being that it has a piston operation not a blowback. So confusing...

 

[ShooterG]

Yea I kind of want it recessed back in the hand guard so I might just stick to 3 lug. I just really didn’t understand the whole piston thing and if I needed a piston if I threaded on the MPX being that it has a piston operation not a blowback. So confusing...

The suppressor piston has nothing to do with the gun being piston driven. It has to do with the barrel moving. Piston MPX, blowback CZ Scorpion, Piston or DI ARs - All of these have direct thread or other type of Non-moving mount system. Your glock and other guns with tilting/moving barrels all need the Neilson device (Threaded piston and spring).