AR-15
Mill the fire control pocket, trigger pin hole, hammer pin hole, and safety selector hole on any mil-spec 80% AR-15 lower.
AR-308
Complete an 80% DPMS-pattern AR-308 lower receiver. Same process as AR-15, scaled for the larger platform.
1911
Mill the frame rails, barrel seat, and trigger group on an 80% 1911 frame.
Polymer80 PF940C
Complete a Polymer80 PF940C compact pistol frame, milling the rails and locking block pin holes.
AK-47
Finish an AK-47 flat receiver, drilling rivet holes and milling the required machining operations.