How to Finish an 80 Percent Lower Receiver as a Functional Firearm

If you’re handy with simple tools and can follow basic instructions, you can turn an 80 lower receiver into an effective and reliable firearm with a few hours of work. To finish them precisely, you’ll need a drill press or power drill, a router jig, a vise, and other components included in the gun parts kit.

80 percent lowers are manufactured solid in key areas to ensure quality and meet legal obligations. Guided by one of our completion jigs, you’ll drill out the space for the firing mechanisms and other vital components. The amount of drilling needed will depend on the model and type of firearm you are preparing. Once the receiver has been prepared, follow instructions for assembly. It’s a great chance to see the ins and outs of your gun and learn how everything works.