||I bought these mags over a week ago. I've went through around 2000 bbs with just them, with very few minor problems. no regrets.
1:FEEDING: my redstar 74 shoots around 20/sec and these keep up no problem.
2:FIT: really snug, almost too much but its nothing to complain about
3:CONSTRUCTION: metal, nuff said.
4: WINDING TIME: 2-3 pulls and your'e set for about half the mag. any more than that I'd think would damage the mag
1: the price... tis a little steep
2: string/wire/winder/the thing that you pull: it doesn't retract all the way in all the time.
3: the mags get tarnished looking. again not much to complain about just so ya know.
Rating: [4 of 5 Stars!]