Well R4 MP7 AEG Electric HICAP MAGAZINE

Well, I've got nothing against it. It is a hi-cap magazine, it does hold 100+ rounds, and it feeds without problem. The only thing is that it says it's electric, which it's not; it's spring powered wind-up. That's not a problem, as it's really easy to wind.

ok product not the greatest and not the worst...had to have it replaced when the feed door broke off...I do have to say that it never jammed and holds quite a few BB's...but like all hi-cap magazines, that's all it's meant to do...don't the over inflated reviews sway you trust check it out for yourself.

pros: fairly durable; high capacity; fits gun well.

cons: to keep ammo feeding into gun you have to wind the magazine up on the bottom every now and then. when you get close to the end of your rounds the magazine will not wind up all the way and thus won't feed the remaining rounds into the gun.

I would have wanted to know how these high cap. magazines worked - having to wind it is kind of a pain. However it's still worth having this in combat.