Me and my friend split this box of mags. The mags fit perfectly into his JG m4. I had to do a little more work to make mine fit into my G&G cm16. I lubed and cleaned all my springs, then I loaded and unloaded 4 or 5 times per mag. The problem I was having was after the first shot the mag would drop a little in the mag well and wouldn't feed. To remedy that problem I wrapped some scotch tape around each mag to have a tighter fit. The mags feed a bit better now, but not consistently enough for me to trust them on the field. Moral of the story: works like a dream in some guns and not so much in others.
Feeds excellently in a JG m4
Strong and lightweight construction
Pretty good capacity for a mid cap
6.50 per mag
Doesn't well in my gun :(
holds more like 90-100 bbs (I counted 120, and the bbs fit, but the jamming was ridiculous)
Rating: [3 of 5 Stars!]