What trigger frames work on RT mags?

[andrewwl]

I recently purchased a used classic RT that had the zgrip sold off of it. I thought any trigger frame would work so I got a benchmark double trigger. Now the banjo bolt won't fit thru the hole in the back of the trigger frame (it is considerably smaller than the hole in the rail). Any ideas?

Andrew

(originally questioned here: http://www.automags.org/forums/showthread.php?t=192618 but got no response )

[shades]

I think this link is what you want to know.