Caliber: 6 Creedmoor, 6.5 Creedmoor, 308 Win. Light Modular Rifle built on POF’s award-winning small-frame design. Direct gas-impingement operating system, E2 dual-extraction chamber, roller cam pin, anti-tilt buffer tube. Barrel: 16.5” 416R stainless steel, 1:8 twist, 6R rifling, muzzle threaded 5/8x24. Mid-length gas system, non-adjustable, low-profile gas block. Same furniture package as the P-15 Base. M1913 rail entire upper surface.