AR-15 80% Lower Receiver Machining Fixture for X-Carve CNC

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This fixture is engineered to precision-machine AR-15 80% lower receiver fire control group pockets. The receiver is securely attached vertically to facilitate FCG pocket machining. The fixture is specifically designed to screw down tightly onto the 75mm on center M5 bolt pattern of the X-Carve wasteboard. Fastener holes have been strategically engineered with a diameter of 8mm, allowing for larger fasteners if using a T-slot or other work surface. <u>Fasteners required for use:</u> <b>(1) M5 x 90mm Hex Head Cap Screw</b> - This screw runs through the mag well and is visible on top of the fixture. The recommended part can be found at <a href="https://www.amazon.com/gp/product/B01MG1C8Q7/ref=ppx_yo_dt_b_asin_title_o00__o00_s00?ie=UTF8&psc=1">Amazon</a>. <b>(2) M5 x 25mm Hex Head Cap Screw</b> (X-carve green or blue thumbscrew lengths will work). <b>(1) 1/4x28" Hex Head Cap Screw</b> - This is a standard grip screw for the receiver, and the fixture retains the rear of the receiver using a standard grip screw angle visible in the analysis render. <b>(!) CAUTION</b> - A standard X-carve lacks sufficient Z travel to machine an AR15 FCG. This fixture is designed for upgraded/modified machines with a 2" Y-axis lift and long travel linear Z-axis.