SP01Shadow,
Thank you. We really need some feedback on these from start to finish on the install and how they work. We have the design at the 99% stage, so if we get input and suggestions, we will listen.
On the OEM bushing removal, we are using a common punch with a fairly large flat end. 1/4" seems to be good and you can typically find this in one of those sets at Lowe's, Home Depot, Sears, etc. We go through the recoil spring tunnel and start tapping at the bushing/slide junction.
Method #2 would be to find or buy a tap that would fit the bushing ID, cut some threads, then put the square driving end of the tap into a vise and slowly pull and wiggle the bushing out. Hope this makes sense.