I have shot a sten mark 11, m2 carbine and a riesing and built a Holmes MP82, this was 1983 which I sold last year. I saw an incredible youtube video of a fellow shooting a fullauto glock 17 with an extended mag with a snail drum on either side of it, I never saw anthing like it, i would have thought it would have melted down as fast it emptyed the mag. Jeff