The Zenith ZF-300 300 Blackout Rifle 16-inch (brand part no. ZF300BKOUT16) is a semi-auto rifle built around a roller-delayed blowback operating system borrowed from the proven HK-pattern lineage. American-made by Zenith Firearms and chambered in 300 Blackout, it pairs a cold hammer-forged barrel with a full-length Picatinny top rail and a last-round bolt hold-open for fast, reliable follow-up shots. The ZF-300 is built for shooters who want the smooth-shooting feel of a roller-delayed platform in a compact, modern rifle package suited to home defense, range training, or a suppressed 300 Blackout build. It ships complete with three 30-round AR-pattern magazines, a hard carrying case, and Zenith’s limited lifetime warranty.

Key Specifications

• Chambered in 300 Blackout, a versatile cartridge equally effective suppressed subsonic or supersonic for home defense and range use.
• Runs a roller-delayed blowback operating system, giving the ZF-300 the smooth, low-impulse recoil feel the HK-pattern platform is known for.
• Features a 16-inch cold hammer-forged barrel with a 1/2×28 RH threaded muzzle, ready for a suppressor or muzzle device without a gunsmith.
• Rifled with a 1:10-inch twist rate, stabilizing the full range of 300 Blackout bullet weights from light supersonic to heavy subsonic loads.
• Includes an ambidextrous manually actuated safety lever, so both right- and left-handed shooters get the same fast, intuitive control.
• Fitted with a free-floating M-LOK handguard with an integrated heat shield, keeping accessory rails cool and the barrel unobstructed for accuracy.
• Weighs 7 pounds without a magazine, keeping the roller-delayed platform maneuverable for home defense or the range.

Frequently Asked Questions

What operating system does the ZF-300 use? It runs a roller-delayed blowback action, the same mechanical lineage used in HK-pattern roller-delayed rifles, for smooth cycling and low recoil impulse.

Is the barrel threaded? Yes, the 16-inch barrel is threaded 1/2×28 RH, ready for a muzzle device or suppressor.

How many magazines are included? The ZF-300 ships with three 30-round AR-pattern magazines along with a carrying case and manual.

Buy the Zenith Firearms ZF-300 300 Blackout Rifle 16-inch

For shooters who want the buttery-smooth cycling of a roller-delayed action in a modern 300 Blackout home-defense or range rifle, the ZF-300 delivers American-made quality backed by a limited lifetime warranty. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and check out the rest of Zenith’s AR rifles lineup while you are there.