Watch American Rifleman staff on the range this week with a version of the JP Enterprises JP-5, a competition-ready, pistol-caliber carbine in 9 mm Luger.

JP Enterprises is known principally as the manufacturer of premium gas-operated rifles. However, the MR-19 represents the continuation of a 12-year foray into manual rifle development.

With four top ports and multiple baffles, the JP Bennie Cooley Muzzle Brake reduces felt recoil by up to 70 percent. ... Contact: JP Enterprises; (651) 426-9196; www.jprifles.com.