Build an outstanding, custom 1911 using one of these top-quality, single-stack receivers as the foundation. Models and features available for any custom project needs. Precision cast from carbon or stainless steel, and CNC machined to final dimensions. Heat treated to Rc 22-24 for optimum performance and durability. Oversize frame rails allow the gunsmith to achieve an exceptionally tight slide-to-frame fit for more consistent accuracy. Select models available with smooth front strap or with crisp CNC machine-cut checkering. Standard model offers a robust, economical foundation for a great, all-around shooter. Available with standard feed ramp. Mfg: Caspian SPECS: 4140 carbon steel (CS). Gunsmith fitting required. FFL required for purchase.