Patriot Ordnance Factory P415 10.5 5.56 NATO OD Green Piston Gas Block 9 M-LOK

The Patriot Ordnance Factory 01988 P415 Complete Upper (Piston Driven Adj. Gas Block) 5.56x45mm NATO 10.5" OD Green Anodized, 3-Port Muzzle Brake, 9" MMR M-LOK Handguard delivers a compact, ready-to-run platform designed for versatile rifle builds and improved reliability in the field. Crafted with a Chrome Moly Vanadium barrel finished in Black Nitride and a piston-driven adjustable gas block, this upper provides smooth cycling across a range of pressures while maintaining controlled recoil and consistent performance. The receiver and handguard feature an OD Green Anodized finish, with the 9" M-LOK handguard offering modular accessory attachment points for sights, lights, grips, and purpose-built accessories, all in a slim profile that preserves balance and maneuverability. The inclusion of a 3-Port Muzzle Brake enhances stability and reduces muzzle rise during rapid follow-up shots, making it a practical choice for close-quarters engagements, varmint control, or competition shooting. Optic-ready by design, this complete upper can be paired with a compatible lower to create a reliable, ready-to-deploy platform for 5.56x45mm NATO ammunition that performs consistently in a variety of environments.