By Ray I.
ProMag debuted their new Rollermag at the 2015 SHOT Show. Their new 30 round Rollermags work with any AR15 pattern firearm and features four wheels on an anti-tilt follower. So instead of sliding up and down inside of the magazine it rolls, which Promag says reduces friction and helps the magazine operate more smoothly. They’re […]
Via:: The Firearm Blog