AR-15/M16 Gas Piston Conversion Kit Primer Download
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.300 AAC Blackout & Whisper
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Since the .300s fit the same profile as the .223/5.56 rounds, you can convert most anything .223/5.56 to accept the .300 AAC & Whisper. And yes, this would be fun.
This photo gallery is excerpted from the new book by Patrick Sweeney, Gun Digest Book of the AR-15, Volume 4. Click here to order this in-depth AR-15 book for only $19.39 (that's $10 off retail).