GForce Arms MKX-3 12-Hammer 12 Gauge Semi-Auto, 18.5 in Barrel, 2 3/4 in Chamber, Magazine-Fed, AR-Style
The GForce Arms MKX-3 12-Hammer is a full-size, AR-style, magazine-fed 12-gauge shotgun built on an aluminum alloy receiver with an 18.5-inch 4140 steel barrel and a 2 3/4-inch chamber. It features a continuous top Picatinny rail that bridges the receiver and forend, flip-up polymer sights, and a full choke installed. The platform accepts MKA-1919 pattern magazines and Benelli/Beretta Mobil chokes, offering practical compatibility in a rugged, black-finished package.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Specific Condition Notes: This shotgun shows minimal markings from previous handling and use.
What’s Included
- 1x 5-round steel detachable box magazine
- Flip-up polymer front and rear sights (installed)
- Full choke (installed)
This MKX-3 12-Hammer is a gas-operated, semi-automatic, AR-style shotgun with right-side ejection and a left-side manual safety lever. The aluminum alloy receiver is black anodized, and the polygonal-profile aluminum handguard integrates a full-length top Picatinny rail that bridges the receiver and forend. Additional rail sections at 3, 6, and 9 o'clock support mounting accessories as needed.
The 18.5-inch barrel is made from 4140 steel and uses Benelli/Beretta Mobil-pattern choke threads. A full choke is installed, and the barrel includes a slotted muzzle device. The chamber is 2 3/4 inches, and the shotgun feeds from detachable box magazines with a 5+1 capacity. It is compatible with widely available MKA-1919 pattern magazines.
Ergonomics are set up for control and comfort, with a fixed, skeletonized synthetic stock that includes a height-adjustable cheek riser and a rubber buttpad. Length of pull is 14.5 inches. A synthetic pistol grip provides a secure hold, and the included flip-up polymer sights are ready to use out of the box.
Finished in black and built in Turkey, this full-size 12-gauge brings together an aluminum receiver and forend, robust rail space, and proven magazine and choke compatibility. The serial number is located on the receiver.