Hardened Arms 300 Blackout Review: The Rest of the Story.

By Cary Kieffer

A month or so back I began testing the Hardened Arms 300 Blackout pistol upper. I left with mixed feelings and said more testing needs to be done. Since then I have purchased and built 2 more guns with their uppers, if one of these cheap uppers interest you read on. Ok, so I built

The post Hardened Arms 300 Blackout Review: The Rest of the Story. appeared first on Tactical Gun Review.

…read more

Via:: Tactical Gun Review