Any semi-auto pistol I buy in the future will have a slide cut for optics. Not too long ago I started a thread on the FN FNX-45, wanting to know what owners thought of them. Then I was turned onto the HK Mark 23 for a little bit. But I found out that pistol slide was not cut for optics. That was...
@Belt Fed, your Ram with a Cummins has an exhaust brake built into and part of your turbo charger. Back pressure from the exhaust is what is used to slow you down. Again, I leave mine on all the time.