The LE6940 displays fresh ingenuity with Mil-Spec hammer and trigger pivot pins a Magpul MBUS iron sight and a folding front sight for enhanced optical solutions a straight gas tube and a removable lower rail which provides modularity for under mounting accessories. The patented one-piece monolithic upper receiver incorporates a continuous Mil-Spec rail from the rear of the upper receiver to the front sight. This feature affords unmatched repeatability for mounting optical systems not found with separate handguard rail systems. Designed with accuracy in mind its true free-floating barrel provides the enhanced accuracy necessary for long-range acquisition capability. Action: Gas Operated Semi-Auto Caliber: 223 Remington/5.56 NATO Barrel Length: 16.1" Capacity: 30 + 1 Trigger: Standard Safety: Reversible Safety Selector OAL: 35.5" Weight: 6.79 lbs Stock: M4 Buttstock Metal Finish: Black Muzzle: A2 Flash Hider Sights: Magpul Rear Folding Front Barrel Description: Government Profile Twist: 1:7" Purpose: Personal Defense/Sport Finish: Matte Black Overall Length: 32 to 35 Features: Front Barrel Lug/ Ejection Port Cover