he must have changed his specs since i got mine then- mine's a genuine colt series 70 mk4 and the frame had to be ground to get the beavertail - i got an almost all wilson package on mine- sights, full length guide rod, lightning trigger( the expensive one) and commander hammer and wilson "high " beavertail - or that's what they called it at the time- the hammer was the only thing that i got from numrich- and if memory serves the strut had to be changed to get the hammer to work as well- i had mine all together but it wouldn't stay cocked until the strut was changed, so off it went to the smith