The Centurion Arms MK12 Mod 1 Rifle with KAC Long FF RAS is a 5.56 NATO AR-pattern rifle built to a Mark 12 Mod 1 configuration. It pairs an 18-inch stainless match barrel, air gauged with a 1:7 twist, Cerakoted black and with polished feed ramps, with a Knight’s Armament long free float RAS. A Crane spec pinned MK12 gas block, an OPS Inc. brake and collar and a Centurion two-stage Advanced Sniper Trigger finish the rifle. Optics are not included.

Key Specifications

• The barrel is an 18-inch MK12 stainless match barrel, air gauged with a 1:7 twist, Cerakoted black, with polished feed ramps.
• The muzzle device is an OPS Inc. brake and collar, the interface the original MK12 uses for its suppressor.
• The rail is the Knight’s Armament Long FF RAS, MK12 Mod 1, a free float design that carries accessories forward of the receiver.
• The gas block is a Centurion Crane spec MK12 design, pinned in place, for a clean front end.
• The trigger is the Centurion two-stage Advanced Sniper Trigger, and the stock is an A2 stock.

Frequently Asked Questions

Does it come with an optic? No. Centurion lists optics as not included. The rifle comes with one 30-round magazine where accepted, a digital USGI manual and Centurion Arms propaganda.

Does it include backup sights? Backup sights are not part of the base rifle. Centurion offers the KAC flip-up front and rear sights as an add-on option.

Buy the Centurion Arms MK12 Mod 1 Rifle with KAC Long FF RAS and OPS Brake, 5.56 NATO, 18-Inch Barrel

The KAC Long FF RAS version follows the original Mark 12 Mod 1 layout more closely than the C4 rail model. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more AR rifles while you are here.