Caliber: 7.62 NATO - BARREL: 20 - WEIGHT: 9.2 lbs - MUZZLE THREADS: 5/8 X 24 - RIFLING: 1/10 RH - LENGTH: 40.5 41.5 - LWRCI 20 Position Tunable Gas Block - Patented LWRCI short-stroke gas piston system offers unparalleled reliability and easy maintenance - Monoforge upper receiver with integrated rail-base is stronger than the standard-pattern upper - REPR MKII Match Grade Proof Research Stainless Steel barrels deliver extreme accuracy and durability - Fully-ambidextrous lower receiver controls include the bolt catch and release the magazine release and the safety selector - LWRCI Advanced Trigger Guard is oversized to allow for easy operation with gloves - Geissele SSA-E 2-Stage Precision Trigger - LWRCI Ambidextrous Charging Handle - LWRCI Skirmish Back Up Iron Sights - LWRCI Ultra Static Brake - 4 Port Enhanced Muzzle Brake- reduces recoil minimizes muzzle climb and improves accuracy. - Magpul MOE+ Grip combines reinforced polymer body construction with comfortable wrap-around rubber overmolding for maximum weapon control in adverse environments - Magpul PRS Gen3 Adjustable Stock - Sub-MOA Accuracy Capable