Designed under the highest quality standards and with extreme reliability in mind, the 2A Armament AR 22LR Conversion Bolt Carrier allows you to quickly and easily convert your .223/5.56 AR-15 into a 22LR rifle. Ideal for small game and low cost target shooting, the AR 22LR Conversion Bolt Carrier weighs in at just 8.2 ounces. Bolt Carrier Features:

Grade 5 6AL-4V Titanium Bolt
Stainless steel collar with chamber plug, ejector, extractor, firing pin
High strength polymer buffer
weight 8.2 oz
Dual balanced reciprocating springs
Requires 2A Armament AR 22LR Magazines or other compatible 22LR magazine.

Manufacturer Part Number: 2A-22CONBCG-1