"I have the 400 fps or whatever CYMA sniper rifle and this magazine came with it. I got more because I run through them instantly because I'm trigger happy. This mag is very confusing, but it holds a lot once you get the hang of it. I didn't give it 5 stars because it is hard to load. You have to use two fingers and hold the front and back of the hole and speed load it from the top. Once you are able to do this it is very easy and it's really nice."