FYI:Somehow I stumbled across a Sportsman’s Guide offering: a Gen4 19 MOS USA made with a threaded barrel for 799.Product No. UG1950203MOSTB. If you add Glock Night Sights, an extended slide stop and maritime spring cups, you would essentially have your own MK27 Mod 02, as issued by SOCOM. The only real difference would be the real MK27 have the threaded barrel spec’d as LH. Earlier this week one of the LGS’s had a Gen 4 19MOS US made but with standard barrel. I’m not affiliated with SG at all, other than having bought some stuff from them.