Requires Aero-Precision pivot pins Complete Guide to Buying Buffer & Spring Combination If you plan to upgrade your AR-10 upper receivers, the first one you should consider is the buffer and spring combination. When the gun is fired, the buffer system’s function relies on the cycling of the...
Yes, although the fit will be less than ideal, and the pins may need to be polished down to size with emory cloth. Depending on which kit is used with which lower, the pivot pin and takedown pin will be too short or too long. It’s hardly the ideal setup, but it’ll suffice in ...