Radical Firearms MK1 MOD1 Patrol Features The Radical Firearms MK1 MOD1 Patrol is built around a 4150 chromoly steel barrel with a 1:7 twist giving it the versatility to stabilize a wide range of 5.56 and .223 bullet weights for both training and defensive use. The mid-length gas system routes through a threaded straight tube reducing gas system leakage and smoothing the recoil impulse compared to a standard carbine-length design. A low-profile .750 gas block keeps the profile trim under the handguard and the RD KFM taper lock flash hider manages muzzle signature for the shooter. Forged 7075-T6 aluminum upper and lower receivers provide the mil-spec durability patrol-style rifles are built around. The 15 M-LOK handguard includes an alignment tab that locks it to the upper receiver adding rigidity for mounted lights lasers or foregrips. B5 Systems Bravo stock and grip furniture round out the ergonomics package giving shooters a comfortable adjustable platform for extended use. Griffin Armament M2 sights ship standard as a folding backup sighting system and the ambidextrous Battle Arms charging handle speeds manipulation for shooters of either hand. For patrol officers home defenders and AR enthusiasts who want a well-rounded mil-spec carbine the MK1 MOD1 Patrol delivers dependable performance. Radical Firearms MK1 MOD1 Patrol Specifications Manufacturer: Radical Firearms Model: MK1 MOD1 Patrol Type: Semi-Auto Rifle Caliber: 5.56 / .223 Rem Barrel Length: 16 Barrel Material: 4150 Chromoly Twist Rate: 1:7 Gas System: Mid Length Muzzle Device: RD KFM Taper Lock Flash Hider Handguard: 15 M-LOK Receivers: Forged 7075-T6 Aluminum Stock: B5 Bravo Black Grip: B5 Sights: Griffin Armament M2 Charging Handle: Battle Arms Ambidextrous Capacity: 30 Rounds Weight: 6.88 lbs Available At: GrabAGun