Good luck finding an acro. It’s pretty rare to come by. I think it’s going to lift you a bit higher than normal. The 509t has a almost picatinny mount that is secured by a cross bolt. I’m away from home but I think it’s going to need to be
509t
adapter plate that comes with it
screwed to rmr plate
gun
when I get home I can show you pictures of what comes with the 509t