Daniel Defense MK12 5.56mm NATO 18in Black Semi Automatic Rifle - 32+1 Rounds - The evolution of the SPR comes home to Daniel Defense in the MK12. This firearm is constructed around an 18-inch Stainless Steel barrel with a chamber created during the Cold Hammer Forging process, which ensures the most precise alignment of the chamber to the bore possible. This, along with being DLC finished, equates to unprecedented accuracy and durability. The MK12 barrel is engineered with a rifle-length direct impingement gas system and utilizes the MK12 gas block, which is built to Crane Specifications for USSOCOM. The MK12 gas block is precision CNC machined from 416 stainless steel and Black Oxide Coated. The new independently ambi GRIP-N-RIP Charging Handle accommodates left- and right-handed shooters and is engineered for suppressed fire, with anti-gas features that redirect gas flow upward and away from the face and operator. Direct Impingement Chrome Lined Barrel A2 Styling Vertical Grip Daniel Defense Buttstock, Glass Filled Polymer with Soft Touch Overmolding GRIP-N-RIP Charging Handle, Body CNC Machined of 7076-T6 Aluminum, Handles Latch 6 Position Mil-Spec 7075-T6 Aluminum Receiver Extension Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished MK12 Low Profile Gas Block CNC Machined of hardened 416 stainless steel with Black Oxide Coating, Rifle-Length, Direct Impingement Made In The USA