Franklin Armory M4-SBR-L Features The Franklin Armory M4-SBR-L is a high-performance semi-automatic rifle built on a foundation of proprietary billet components. It features a Libertas Proprietary Billet Upper and Lower receiver ensuring a tight fit and exceptional durability for demanding users. This rifle is equipped with a 15-inch FST handguard for maximum modularity and a Magpul CTR stock paired with an Ergo Grip for enhanced shooter comfort and control. Performance is at the heart of the M4-SBR-L which comes standard with a Binary Trigger for rapid engagement. The 14.5-inch medium contour barrel features a pinned Triumvir muzzle device to reach a legal 16.1-inch overall length maintaining a compact profile without sacrificing accuracy. Finished in a hard-coat anodized black this rifle is optics-ready and designed to provide a reliable platform for both tactical applications and modern sporting use. Franklin Armory M4-SBR-L Specifications Manufacturer: Franklin Armory Model: M4-SBR-L Subtype: Modern Sporting Rifles Caliber: 5.56 Caliber2: .223 Rem Barrel Length: 16.1 Threaded Barrel: None Action: Semi-auto Finish: Hard Coat Anodized Stock: Collapsible / Folding Stock Grips: Ergo Grip Rate-of-twist: 1-in-7 Capacity: 30 + 1 Sights: Optics Ready Receiver: Alluminum Upper/lower Trigger: Binary Trigger Equipped Handguard: 15 FST Handguard Muzzle Device: Pinned Triumvir Final Weight Lbs: 10