This Palmetto State Armory Lower is fully assembled and ready for your complete Upper! We start with our standard single-stage government-style fire control group, finely polish the contact surfaces and then coat the hammer and trigger in a super slick nickel finish. The result is a trigger that is substantially smoother than mil-spec. A great economical upgrade. This lower is finished with a Magpul MOE SL Stock, Magpul MOE Trigger Guard, and Magpul MOE SL Grip finished in Black. Made in America and compatible with all AR-15 uppers.