CMMG Barrel and Collar Kit, 16.1" M4, 22 Long Rifle
Perfect for building your custom dedicated 22LR AR-15 upper group. Also Includes barrel collar to replace the chamber adaptor on your 22ARC.
Features and Specifications:
Manufacturer Number: 22D7C4A
4140 Chrome Moly
Salt Bath Nitride Finish inside and out
22LR Sprorting Chamber
.750" Carbine length Journal