Magblock 10 Round Limiter for Glock Magazines

Magblock 10 round limiter for Glock factory magazines. As is, it can be used with a Glock 17 17rd mag, and can be broken off to use with a Glock 23 13rd mag, Glock 19 15rd mag, Glock 22 15rd mag, and more. It will only work with gen 3 and gen 4 Glock mags which have followers that sit on top of the spring, it will not work with mags which have followers that are attached to the spring, see picture number 3 to see an example of the type of follower needed.