CMMG AR-15 .22 LR Replacement Barrel & Collar Kit, 16.1in Threaded 1/2-28 Black Nitride 22D7C4A

Product Description

The CMMG Replacement Barrel Kit with Collar is built for shooters who want to assemble a dedicated .22 LR AR-15 upper with proven CMMG compatibility. This 16.1-inch M4-contour barrel is made from durable 4140 chrome moly/chromoly steel and finished in a black nitride (salt bath nitride) treatment for corrosion resistance. It includes the barrel collar needed to replace the chamber adapter on a .22 AR conversion and to support a dedicated .22 LR bolt carrier group (BCG) build.

Product Highlights

• Purpose-built replacement barrel kit for dedicated .22 LR AR-15 upper assemblies
• Includes barrel collar to replace the chamber adapter on .22 AR conversions
• 16.1-inch M4 contour with 1:16 twist optimized for .22 Long Rifle
• 4140 chrome moly/chromoly steel construction with black salt bath nitride finish
• Threaded 1/2"-28 muzzle for common rimfire muzzle devices and suppressor mounts

Specs

• Brand: CMMG
• Manufacturer Part Number: 22D7C4A
• UPC: 815835014944
• Caliber: .22 Long Rifle (.22 LR)
• Barrel Length: 16.1 in (16.10 in stated)
• Material: 4140 Chrome Moly/Chromoly Steel
• Finish: Black Nitride / Black Salt Bath Nitride
• Twist Rate: 1:16
• Barrel Contour: M4
• Muzzle Threads: 1/2"-28
• Gas Block Diameter / Journal: 0.750 in
• Compatibility: AR-15 (dedicated .22 LR upper build)
• Included: Barrel collar
• Chrome Lined: No
• Shipping Weight (approx.): 1.96 lb

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