CMMG

Barrel Sub Assembly

Perfect for building your custom Mk3/High Pattern LR-308 upper group. Comes with a properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. Made of 416 Stainless Steel with a Nitride Finish.

Description:

• Platform Mk3
• Caliber .308 Win
• Barrel Length 20
• Barrel Twist 1:10
• Barrel Contour Mt
• Barrel Material 416ss
• Barrel Twist 1:10
• Muzzle Thread 5/8 X 24
• Gas Port Location Rifle
• Gas Block 0.750"
• Finish Sbn