Part of a CMMG banshee build.
I lightly blasted and Cerakoted this upper for a .45 ACP PCC build. It fit perfectly snug with my lower. No rattle. The pins can still be removed By hand without a delrin punch assist. It has a standard ejection port door size that was compatible with mil spec doors and Strike Industries drop in doors just fine. Works with the Banshee barrel and bolt just fine. No FTF or FTE. YMMV but so far there are no flies on this upper.

