I removed all the meat beneath the rear sight, took a bunch off the sides of the disconnector rail, deepened behind the breech face on the ejector side, used a fly cutter to get inside the barrel channel and thin that out and flat topped it. A fixed sight will weigh less than an adjustable also. A gunsmith who builds steel guns would be the man to talk to about things like this. Let me know if I can be any more help.
Tom
AF Shooting Team
Tom
AF Shooting Team