Per the agent thread in the pistol tech forum, I ordered direct from Don at Ameriglo. I wanted a Bold set for my 19X, but with .125 width front- he suggested .200 height for any/all Gen5. It took a few weeks to get with communication being not as good as most vendors (3 weeks to ship instead of quoted 2-3 days, never got promised shipping notification). The sights are nicely made, but hit 6-7” below point of aim when using 147gr and drive the dot. Currently working exchange for .165 front to get my preferred top edge of front post sight picture.