Will the FCGs work in my _______ [fill in the blank] lower?
Hiperfire’s FCGs will work with any lower receiver that has a Mil-Spec cavity. View the “MIL-spec” cavity drawing, AR10 & AR15 Fire-Control Cavities, that shows the spec that the HIPERTOUCH® FCGs were designed to. Lower receivers that have that cavity, open and unobstructed, will receive the FCG’s without any problems.