I read or watched a video what ( I believe is the owner of Shield Arms) has stated on their company page is that the steel mags will eventually eat away the polymer factory catch. He stated that some folks had failures sooner then others..... You can find it on their website!
Personally , I wouldn't give 350 bucks for the bucket and the 6 shot. I was just showing the whole picture about 350 for a bucket! The op didn't say anything about the "free" 22 revolver!
I was in Adventure Outdoors this afternoon and if you bought a hand gun, they sold you a 200 round box of 9mm for 120 had to buy a pistol,. They had 45acp on the shelves if I remember right 50 for 35.00.... The place was "hopping" selling a 12ga. for 220 I think, they were selling like crazy...