Has anyone installed an Extended Magazine Release for a Glock 27? I am looking in Brownells and can't decide which one to get. My choices are as follows, T.H.E. ACCESSORIES --- GLOCK COMPETITION MAG RELEASE J P ENTERPRISES --- GLOCK EXTENDED MAG RELEASE ARO-TEK --- GLOCK EXTENDED MAG RELEASE The only thing that I don't like about the ARO-TEK mag release is that it is made entirely of metal, unlike the other two. What are your suggestions?