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