Probably a Dumb Question

[Allsmiles]

Like @ShooterG said above. Anytime you are running direct thread (fixed barrel) you will need a spacer to go over the piston instead of the spring. The spacer keeps the can from moving when firing. If you don't, you risk ruining the barrel and the piston/mount as the can will hammer both without the spacer from the spring motion. Also, the spacer will often leave a little gap in the housing when installed to show it has been installed. It will all make much more sense once you go shoot it and see what everything does. General rule is that if the barrel moves, spring. If the barrel is fixed (AR9 for example), install the spacer instead of the spring. I don't have any 3 lug set ups, so I can't help with those.

 

[CSA]

Nice thanks man.

 

[CSA]

Like @ShooterG said above. Anytime you are running direct thread (fixed barrel) you will need a spacer to go over the piston instead of the spring. The spacer keeps the can from moving when firing. If you don't, you risk ruining the barrel and the piston/mount as the can will hammer both without the spacer from the spring motion. Also, the spacer will often leave a little gap in the housing when installed to show it has been installed. It will all make much more sense once you go shoot it and see what everything does. General rule is that if the barrel moves, spring. If the barrel is fixed (AR9 for example), install the spacer instead of the spring. I don't have any 3 lug set ups, so I can't help with those.

Nice thanks man.

 

[cr107]

If your can is recessed into the handguard on the MPX, you will want the 3 lug, makes it a lot easier to get the can on and off if something were to get stuck.

 

[CSA]

If your can is recessed into the haggard on the MPX, you will want the 3 lug, makes it a lot easier to get the can on and off if something were to get stuck.

Yea that’s what I was thinking

 

[HfdSARG]

Keep in mind direct thread cans tend to loosen after about 15 to 20 shots and will need to be tightened. With a 3 lug once it is mounted you don't have to worry about it backing off.

 

[CSA]

Keep in mind direct thread cans tend to loosen after about 15 to 20 shots and will need to be tightened. With a 3 lug once it is mounted you don't have to worry about it backing off.

Yea I’m mainly buying for MPX pistol so three lug is priority. Not I need a three lug mount to fit in omega 9k...

 

[cr107]

Yea I’m mainly buying for MPX pistol so three lug is priority. Not I need a three lug mount to fit in omega 9k...

Heres the newer low profile 3 lug mount https://www.store.silencerco.com/collections/omega-9k/products/3-lug-mount?variant=35515080017

 

[CSA]

Heres the newer low profile 3 lug mount https://www.store.silencerco.com/collections/omega-9k/products/3-lug-mount?variant=35515080017

Yea I actually found an older longer one AC148 for $80 from a local guy new in the bag. It’s going under the handgaurd so the extra length don’t bother me and might help be a little quieter, maybe. I do appreciate the link and the advice.

 

[Jackspack]

Check Griffin Armament. They have a 3 lug that fits the SIG. The SIG has a reverse thread.