WONDERFUL!!!

Needed mid-cap mag for milsim event. This worked perfectly. Received item quickly. Excellent service. Will do more business with airrattle.

For my m4 s-system enhanced it won't just be put in easily, you'd have to wobble and move it around to go in. Don't get me wrong, it does feed but make sure you load it right or the bbs will get jammed

No rattle and good build quality good feeding in my m4

Got these for by little brother's (16th Birthday), and he loves them, they worked great and had no jamming issues.

I like not having to use winding wheel as found on other magazines since this is a low mid capacity @ 140 rds and easily loaded with a speed loader. Only drawback is that it is plastic vs metal, but it looks good in black on any m4 platform. This magazine also fit better than the original magazine my gun came with, so overall it is a great value.

Quiet and easy to sneak up on a person with out much sound. They are polymer

They fit my m4 very nicely. Speed loaders fit very nice in it. Much easier to load than a high cap.

springs are really stiff so you'll definitely have to break them in with a cleaning rid or piece of wire. made of polymer so it's yet to be seen if theyre durable