My pistol is a Glock 49mos, and has ambidextrous slide release and holosun 508T optic, for reference. Any questions please call or email me

Under “light detail” I don’t know what to put. It’s an Sig Foxtrot2r going on an Sig P365 AXG legion so whatever is needed for that combo is what I need. I “believe” it’s the 1913 style rail but don’t know there is 4 choices??

I am using a P365X did not see an option so I assume it is same as P365.