I'm ordering a drop-in HTG for my SPS Tactical and can't decide how to configure it. I want to use just a sling most of the time, but have the option to attach a Harris bipod. It looks like they come standard with two studs. Should I just get a second stud up front? Or should I get the Wichita swivels and a single stud up front? Can they even do that? Thanks for any help.