Got the GSR back. No more feeding issues. They machined off the metal causing the issues which is good. But they didn't refinish the rifle so now there is raw unprotected steel in the back top portion of the mag well.... Somebody wasn't thinking. The alpha industries mags still aren't running 100% I called to see about returning but the owner said to keep then and tweak then and find out what needs done to make them work. He then said he was going to refund my money. Amazing customer service!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! If you need AI pattern mags look him up FIRST!!!!!!!!!