Poor design - Ammunition Storage Components AR-15 450 Bushmaster Stainless Steel 5 Round Rifle Magazine

After reading the favorable reviews, I purchased 2 ASC 450 Bushmaster Magazines. It took 28 days to receive them and they did not work. The rounded relief cut was not DEEP or WIDE enough. The cartridge mouths would hang up and NOT feed reliably, if at all. Tried several different factory rounds, hard ball, Hornady FXT and Federal JHP. At a cost of $28.89, this is not acceptable. I had great results when I took a STANDARD G.I. issue 20 round AR15 mag, added a special follower and ground in the relief. TOTAL cost $10.00, mag and follower. Too much hassle to return. I will rework them myself. I have a few other ASC magazines and they are great EXCEPT FOR THESE. What happened ASC?