I never did like the 2-finger charging handle pull on my first AR. Wonder of wonders, I stumbled onto a guy who would drill/tap your bolt on the left side in the slot, no other changes. He made a "SS threaded "bolt pull" that screwed into the bolt on the left side. I had him do one for me. I LOVE IT. I shoot rifles right handed, so, cocking with my left hand seemed perfect. I shoot pistols left handed. Seems to be a match made in heaven. The advantage is the "cocking handle" is farther away and MUCH easier to "rack the bolt". Maybe, XT or Murray would do this for whomever wants it. I have since had all my AR platforms "converted". The guy I used worked for a CNC shop and would do this "after hours" with permission. I don't where the guy is now.