Heatseeker is an innovative, affordable chassis system for your bolt action rifle, allowing you to easily upgrade a traditional factory rifle stock for improved versatility and a sleek, modern appearance. This 1lb, 3 ounce chassis is machined from billet (solid block) high-strength 6061-T6 aluminum and includes a 10 ounce, 14" handguard cut from a unique extrusion shape exclusive to Sharps Bros. Both the chassis body and the handguard are finished in a matte black Cerakote. The handguard features MLOK slots on 4 sides for various attachment options (light, bipod, night vision, ARCA rail...) and two quick disconnect fittings per side for sling attachment. Add your grip of choice with Heatseeker's standard AR15 grip interface. Heatseeker's built in AR buffer interface allows you to further customize your rifle with your preferred AR15 type stock as well. This offering is for the Ruger American Ranch (calibers: 5.56/223, 300 blackout, 7.62x39, 6.5 Grendel, 350 Legend & 450 Bushmaster). This Heatseeker model is compatible with standard AR15 magazines.