Can't go wrong - Battle Arms Development AR Magazine Release Part Kit 1

Battle Arms as a company make some pretty solid stuff. So for the price of this it was a no-brainer. It has a great feel and looks good installed in the gun. What I like the most is the spring it comes with. It is about twice as heavy as a normal spring. So if you have a weapon that recoils a little more than your typical 5.56, this will keep your mag from falling out. My 8" x39 would drop mags all the time. Not anymore.