Some firearms aren't just rare - they're legendary. The GL/SSC is both. The original was so unobtainable that only 25 ever reached civilian hands - and even then, builders went to extraordinary lengths just to get close. Specifications and Features: Caliber: 5.56mm NATO Muzzle Thread: 1 ? 2 x 28 TPI (Threads Per Inch) Gas System: Carbine Barrel Length: 12.5" Barrel Profile: Government Muzzle Device: DD A2 Flash Hider Rail System: Free-Floating GL/SSC RIS II Product Weight: 6.2 lbs Length: 29" - 32.25" Magazine: DD Magazine Case: Daniel Defense Full-Latch Impact Plastic Case Manufacturer: Daniel Defense