Essex County

I have a past histroy of remodeling Mausers going back into the sixties and up into the eighties. It doesn't make economic sense anymore. That said, I am in desprate need of a Mauser with a reciever sight. My eyes just can't do opens anymore. Somewhere, packed away I have a Williams FP and a Timney trigger. I also have a number of Turks and a couple of Yugos hanging around. I was wondering if I could mount the Williams and retain the upper handguard. Any wisdom would be greatly appreciated. Thanks to all...........Essex