Model: MMR762 Optic Ready - Caliber: 7.62 NATO - Finish: Black - Action: Semi-Automatic - Stock: 6 Position Adjustable MR M-LOK Handguard - Barrel Length: 16.5 - Overall Length: 36 Extended 39.5 Retracted - Weight: 9.94 lbs - Capacity: 10+1 - # of Mags: 1 - Safety: Ambidextrous Safety Lever - Receiver: Picatinny Rail on Upper - Features: Gas Piston Operating System Medium Contour Barrel; CA Fixed Mag Juggernaut Hellfighter Mag Lock Kit