A while back, I read that SA was building a 1911, downsized around the .45 Glock action pistol round. I think the emp springs from that platform. So far I've never seen the .45 gap pistol. The .45 gap is the same overall length as a 9mm or .40 s&w, so pistols in this caliber could be more easily modified to take the larger round, from Browning high powers to CZ 75's, and of course the small frame glocks, for which it was designed. I am slowly being led by my friends into believing the 9mm has come a long way.Bullet and powder technology has brought it up to a true defense round. The juries still out IMO.