CMMG .22 conversion for Mid length GPU

[GlockTank]

Do I just need to take out the piston for the CMMG to work in the upper?

[Addax]

Do I just need to take out the piston for the CMMG to work in the upper?

Yes, just remove the piston, since the .22 conversions are a blow back design, you do not need the extra weight of the piston sitting ideal in your upper. We recommend keeping the piston tube in installed.

Also, make sure to clean out your barrel really well after shooting .22 through the barrel.

AT

[GlockTank]

Thanks appreciate it