Stealth Arms specializes in 80% build systems covering both AR-platform lowers and 1911 frames. Jig kits use interchangeable top plates, drill press guides, and included drill bits to machine the fire control pocket, trigger slot, and pin holes on 80% lower receivers, plus a frame-and-jig combo for 1911-pattern builds that guides drilling of sear/hammer holes and cutting of the barrel seat and side rails. All kits are made in the USA, ship with written and video instructions, and require the builder to supply a drill press or milling machine and cutting lubricant. None require an FFL transfer as sold.
