Gem Gm-45 Rear Piston Lid M16 4345814 609224345814

Gemtech Piston for GM-45, Lunar-45 and Blackside-45 LID (M16x1mm LH)
Caliber
Sound Reduction
Diameter
Length
Weight
Mount
Material
Full Auto Rated
Finish
Thread size M16x1mm LH
Can also use on 40 caliber and 9mm pistols.
All options can be installed in the field without the use of tools.