This is to hold another magazine without breaking your mag well. It is actually a few seconds slower than a mag clamp. It has a hole that allows you to put a wire through to connect to a battery. You WILL need modification unless your gun already comes with a hole in the side which I highly doubt. If you are going to use it as a magazine holder here's how it works. If you have areal steel style mag release in which you press the button and the other side sticks out you can use it. Theres's this one button where the thing that pops out of you gun when you press the mag release
is and as you press the mag release it loosens its grip on the magazine and you can pull it out and put the mag in the mag well. Forgot to tell you, this mounts on the side of your gun. It works for my classic army M4 and my Marui one.
Hole to slip wires through
lets you keep another mag at any time, no need for buying 100 mag clamps.
Gets in the way of your bolt stop a bit.
If you have a M203, this is not for you. It is awkard to fire the M203 with this on because this is in the way.
Very stiff gears
Overall: Good. Buy this if you want to hold a battery . You will need drilling.
Don't buy this for your mags.Get mag clamps instead uless you don't want to spend$$$ or don't want to mess up your magwell. Four stars because of price.
Rating: [4 of 5 Stars!]