Sienna Armory Posted September 22, 2018 Report Share Posted September 22, 2018 I have a few NEW Osprey Defense piston conversion kits for the AR15 / M16 carbine length gas system. These are a really cool system that allows you to quickly convert your gas-impingement AR15 or M16 into a piston-driven gun. Kit comes with EVERYTHING you need including bolt-carrier, handguards, piston rod, pins, etc. These are $300 on Brownells $210 SHIPPED to your front door CALL or TEXT 281-467-5424 Military Arms Channel Review: Quote Link to comment Share on other sites More sharing options...
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