So I was looking at threaded beretta 92 barrels and saw that bar sto offers one threaded in 9/16x24 which surprised me as I figure the barrel was too thin for that size threads to have any shoulder leftover. So I got out my beretta and my G19 and according to my caliper they have almost the extract same muzzle diameter, within .003. So my question is, could a G19 use a 9/16x24 threaded barrel?