Caliber: 6.5 Creedmoor. Capacity: Magpul 20-round PMAG 6.5 Creedmoor. Barrel: 22 in., Proof Research carbon-fiber or stainless steel barrel, 1:8 in. RH twist, 5/8x24 tpi muzzle threads. Stock: Magpul PRS. Grip: Magpul MOE+. Sights: Low-profile, flip-up Skirmish Sights. Weight: 10.5 lbs. Trigger: Geissele SSA-E 2-Stage Precision. Overall Length: 43.5 in. Features: Rapid Engagement Precision Rifle. Non-reciprocating side charging handle, 20-position tunable gas block, short-stroke gas piston system, Monoforge upper receiver with integrated rail-base, removable top rail design, removable barrel, fully ambidextrous lower receiver controls include bolt catch and release, magazine release and safety selector. LWRCI Advanced Triggerguard, Skirmish Back-Up Iron Sights, Enhanced 4-port Ultra Static muzzle brake.