These are garbage. They are made on their M-14 mags which just have the "HK collar" put over it. They will not work worth a flip in the M1A. They won't lock up in the action in either weapon. Don't waste your money.Any Good? Please report.
BTW, I'm not selling these and I don't have any. Just wanted to know if there junk before I order a few for my V51SBR.