CMMG Barrel and Bolt Group Kit 4.5inch MT 4140CM 22LR

Everything you need to convert your existing upper to a dedicated .22LR. Just purchase a magazine and you are ready to go.

• 4.5″
• Medium Taper Profile
• 4140 Chrome Moly
• Salt Bath Nitride Finish inside and out
• 1:16 Twist
• 22LR Sprorting Chamber
• Threaded 1/2-28