Click on each spec to see options. Other colors available.
Current Caliber none
Caliber
Current Gas Port Position none
Gas Port Position
Current Gas Block none
Current Gas Block
Current Brass Deflector none
Current Brass Deflector
New Caliber none
New Caliber
New Gas Port Position none
New Gas Port Position
New Barrel Length none
New Barrel Length
New Gas Block none
New Gas Block
New Barrel Twist none
New Barrel Twist
New Muzzle Device none
New Muzzle Device
New Oprod none
New Oprod
New Gas Tube none
New Gas Tube
New Bolt none
New Bolt
New Bolt
New Firing Pin none
New Firing Pin
New Magazine none
New Magazine
Brass Deflector none
Brass Deflector
Total: