Daniel Defense built the MK18 to satisfy the exacting demands of USSOCOM, and this factory SBR remains one of the most proven 10.3 5.56 NATO platforms ever fielded. Outfitted with the MK18 RIS II-Daniel Defense's legendary rail system developed under SOCOM contract-and a Cold Hammer Forged 10.3 barrel, it delivers durability and reliability far beyond standard carbines. This configuration adds the LAW Tactical Gen3M folding stock adapter, giving shooters the ability to fold the stock for ultra-compact transport without compromising strength or function. Everything about the MK18 reflects rugged, duty-ready engineering. From the 7075-T6 receivers and hard coat anodizing, to the properly staked M16 BCG, to the chrome-lined Government-profile barrel, the rifle is built for sustained use in harsh conditions. The included DD buttstock and pistol grip offer a comfortable, secure interface, while the H-buffer and carbine-length gas system provide proven reliability across ammo types and environmental conditions. The end result is an SBR trusted by professionals and enthusiasts who demand a compact platform that performs when it matters most. Specifications Caliber: 5.56 NATO Capacity: 32+1 Barrel Length: 10.3 Cold Hammer Forged, Chrome-Lined, 1:7 Twist Action: Semi-Automatic Gas System: Carbine Length, Direct Impingement Upper Receiver: 7075-T6 Aluminum, Mil-Spec, Type III Hard Coat Anodized Lower Receiver: 7075-T6 Aluminum, Enhanced Flared Magwell, QD Attachment Point Handguard: Daniel Defense MK18 RIS II (6061-T6 Aluminum, Type III Hard Coat Anodized) Muzzle Device: Daniel Defense Flash Suppressor (17-4 PH Stainless, Nitride Finished) Bolt Carrier Group: M16 Profile, Chrome-Lined, Properly Staked Gas Key Buffer: H Buffer Stock: Daniel Defense Buttstock, with LAW Tactical Gen3M Folding Adapter Pistol Grip: Daniel Defense, Soft-Touch Overmold