Wilson Combat Trac-Lock II front sight question

[missiondude]

After doing loads of on-line research, I have come to the conclusion that I want to install a Wilson Combat Trac-Lock II front sight on my vent-rib shotgun. Does anyone have one that has not been installed so that I may get a few measurements? My plan is to mill out a chanel the width of the vent rib, then run a screw into the stock hole where the fiber optic front sight used to be. This barrel is off another one of my shotguns, so I do not want to do a permanent mod to the barrel making it unuseable on the donor gun. I contacted Wilson Combat, but was told that they did not have specs or dimensions for the sights.

Thanks

Edited September 8, 2012 by missiondude