Radical Defense MK1 Mod1 DMR Features The Radical Defense MK1 Mod1 DMR is built around a 4150 Chromoly barrel with a 1:7 twist rate cycling through an intermediate-length gas system with a threaded straight gas tube for reliable consistent operation. Forged 7075 T6 aluminum upper and lower receivers include a forged mil-spec upper with M4 feed ramps and forward assist paired with a forged lower featuring a B5 Precision stock and grip. A .750 low-profile gas block and RD KFM taper lock flash hider round out the barrel assembly for controlled muzzle rise and improved follow-up shots. The Battle Arms ambidextrous charging handle allows fast positive manipulation from either shooting side. The 15 M-LOK handguard includes an alignment tab to the upper receiver for a secure wobble-free fit and provides ample real estate for lights optics and other accessories. Griffin Armament M2 sights ship standard giving shooters a reliable set of back-up iron sights right out of the box. The rifle ships complete with a 30-round magazine ready to run as soon as it arrives. At 8.25 lbs and finished in a durable black metal finish the MK1 Mod1 DMR is built as a capable designated marksman platform for shooters who want a well-equipped AR-15 without extensive aftermarket upgrades. Radical Defense MK1 Mod1 DMR Specifications Manufacturer: Radical Defense Model: MK1 Mod1 DMR Action: Semi-Automatic Caliber: 5.56 / .223 Rem Barrel Length: 16 Barrel Material: 4150 Chromoly Twist Rate: 1:7 Gas System: Intermediate Length Handguard: 15 M-LOK Receivers: Forged 7075 T6 Aluminum Sights: Griffin Armament M2 Charging Handle: Battle Arms Ambidextrous Capacity: 30 Rounds Overall Length: 38 Finish: Black Weight: 8.25 lbs Available At: GrabAGun