Well, this project took an unexpected turn for the better. I originally started looking for a 507C to go on a Gen 5 G34 MOS. I really have gotten into the always on red dot sitting on whatever I might pick up, being carry pistol, nightstand pistol, rifle or shotgun.
With the good advice from this post and some other research, I started looking around to get a Holosun. Watched a lot of videos, asked a lot of questions. Reader's Digest version of events, I ended up trading a Colt Defender for a Gen 4 Glock 34 MOS and another 507C, so now I have 2.
Now to get some range days....