KRISS Vector SBR Gen III Specifications Manufacturer: KRISS USA Model: Vector SBR Gen III Type: Short Barreled Rifle, NFA Item Caliber: 10mm Capacity: 33 Rounds Color: Ironwood Delta Camo Finish: Cerakote Barrel Length: 5.5 in Barrel Material: 4140 Chrome Moly Barrel Finish: Black Nitride, QPQ Threaded Barrel: Yes Thread Pattern: 9/16x24 Handguard: Single-Slot M-LOK Rail Trigger: Skeletonized Sights: Low-Profile Flip-Up Safety: Ambidextrous Controls: Ambidextrous Magazine Release Grip: Interchangeable AR-Style Pistol Grip Stock Description: Ambidextrous 3-Position Adjustable Folding Stock Receiver Description: MIL-STD 1913 Picatinny Stock Mount Compatible Hosts: GLOCK Magazines Included Magazines: 1 33rd Magazine