CMMG Rimfire Barrel Bolt Kit AR-15 Pistol Med Taper Contour 22LR 4.5"

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

Specifications and Features:

• Barrel Contour: Medium
• Cartridge: 22 Long Rifle
• Compatible With: AR-15
• Country of Origin: United States of America
• Finish: Salt Bath Nitride
• Gas Block Diameter: 0.75 Inches
• Gas System Length: Rifle
• M4 Feed Ramps: No
• Material: 4140 Chrome Moly Steel
• Threads: 1/2"-28
• Twist: 1:16

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