I was trying to talk my friend into going to a GSSF shoot this year. ( he owns no glocks) I was planning on letting him borrow a G21 or another friend was going to offer up his G31. The question he had was , why doesn't other gun mfgs follow GlockUSA and offer GSSF shoots? ( sig, H&K, etc.....) btw: He is a H&k shooter and shoots darn well. The second question that came up in our discussion isn't their any GSSF matches outside of USA liek maybe the Americas or Canada?