Re: Glock barrel
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: former naval person</div><div class="ubbcode-body">Unless the maker is grossly sloppy, ALL Glocks are drop-in. </div></div>
To get tight tolerances, Barsto makes both gunsmith-fitted and "semi-drop in." I have the semi-drop in for both my G-17 and G-26. Both went in with a "snick!" and just fit, taking up most all of the slop in the barrel-slide-frame fitment. I just get to shoot them. However, in some Glocks, minor filing might be necessary.
Nothing sloppy about the Barsto barrels, but in order to get the tightest fit, they went with dimensions that will drop in to most, but not all Glocks.