My AR15 pistol was operating flawlessly with the Phase 5 Buffer Tube, 2 3/4 ounce Carbine Buffer and Carbine Spring. So in my attempt to make it shorter, I installed the GunSmoke Enterprises (GSE) buffer. It comes with all parts, 4" Tube, Cap and Castle, Washer, Guide, Spring and Buffer Insert. After installation, I experienced light primer strikes. This is usually a function of the Hammer/Spring and the overall cleanliness of the pin, bolt, etc. All I can think of is that the new buffer spring is not fully closing (rotating) the bolt and leaving little if any protrusion of the firing pin. I have compared BCGs while removed and locked similarly. All firing pins protrusions appear to be the same. While I have yet swapped the BCG's around, I thought I would ask? So my question is "Do I need to buy a new gun?"