Zenith Firearms ZF-56 Features The Zenith Firearms ZF-56 runs on a roller-delayed blowback operating system a mechanism prized for its smooth recoil impulse and reliable function even in a shorter-barreled more compact firearm. Its cold hammer-forged barrel rifled with a 1:10 twist over six grooves delivers durable accurate performance shot after shot. A last-round bolt hold open lets shooters know instantly when the magazine runs dry speeding up reloads in dynamic shooting scenarios. An ambidextrous manually actuated safety lever keeps the pistol easy to operate for both right- and left-handed shooters. Built with an M-LOK free-floating handguard featuring an integrated heat shield the ZF-56 keeps the shooter s support hand protected during extended strings of fire. The full-length Picatinny top rail provides a stable direct mounting surface for a red dot or magnifier combination. Threaded 1/2x28 at the muzzle the 12 inch barrel accepts a suppressor or muzzle device for reduced signature and the buffer tube compatible end cap allows for a stabilizing brace to be added. The pistol ships with three 30-round AR magazines and a high-quality carrying case. For shooters who want an American-made 5.56 pistol built on a proven roller-delayed platform the Zenith Firearms ZF-56 is available for sale at GrabAGun. Zenith Firearms ZF-56 Specifications Brand: Zenith Firearms Model: ZF-56 Type: Semi-Auto Pistol Operating System: Roller-Delayed Blowback Caliber: 5.56 NATO Barrel Length: 12 Barrel Description: Cold Hammer Forged Twist Rate: 1:10 Thread Pitch: 1/2x28 Handguard: M-LOK Free-Floating Heat Shield Safety: Ambidextrous Capacity: 30+1 Magazines Included: 3 Weight: 7 lbs Finish: Matte Black Available At: GrabAGun