They look like good quality. I always feel like Nickel is a little slicker than regular steel. Seamless tubes, if they have good springs and followers, you should be good to go.Mine run's fine with 7 8 and 10 rounders we will see when I get the 15 if they work they are pro Mag's so who knows but it's a good excuse for me to buy more ammo and go to the range lol