T6 Firearms T90072BLK: Caliber: 7.62x39 Match Grade - Upper Receiver: - Assembled Upper Receiver - Ambi Charging Handle - Skelton Nitride Bolt Carrier Group - Barrel: - 7.62 x 39 Match Grade Nitride (TRUE 16 Overall Length barrel w/ TCS system) - Carbine Length Gas Tube - Adjustible .750 Gas Block - Roll Pin - 9/16 x 32 TPI Thread - 1:10 Twist Rate - Built it Compensator - Lower Receiver: - Complete Lower Receiver - Flat Olympus9 3-6Lbs Trigger - NU Custom Grip - Enhanced Trigger Guard - Extended Mag Release Button - Extended Take Down Pins - Safety - Muzzle Device: Built-in Tunable Compensator System - Stock Kit: - Battlelink Extreme Duty Minimalist Stock - SRS Upgraded Silent Capture - Handguard: - 13 Aluminum Jester scalp Rail - M-LOK Style - Barrel Nut with Rail Attachment and Screws - Material: 7075 T6 Aluminum - Color: Black Cerakote