Okay, so you aren’t actually going to mistake a Just Right .45 ACP for an AR-15. But for being a pistol-caliber carbine, AR fans should find the JR Carbine Gen 3 very familiar to use.

Just as AR-15 owners can smoothly transition to AR-based pistol caliber carbines, the Beretta Cx4 allows those familiar with Berettas to quickly adopt a shoulder-fired weapon. The explosion of ...