6.5” Threaded Barrel - Modular Rail Hand Guard - Patented KRISS Super V Recoil Mitigation System - SB Tactical SBA3 Collapsible Brace - KRISS Folding Adaptor - DEFIANCE Low Profile Folding Sights - Full Length MIL-STD 1913 Picatinny Top Rail - Glock Magazine Compatible - Toolless Caliber Interchangeability - Ambidextrous Short Throw Safety Lever - Caliber: 10 mm - Capacity: 15+1 - Overall Length: 18.625 / 473 mm - 28.625 / 727 mm - Weight: 7.5 lbs / 3.4kg - Barrel length: 6.5 - Twist Rate: 1:10 RH - Thread Pitch: 9/16 x 24 RH