It sounds like you have several options to reconfigure the bottom metal for ol’ Fugly. Will be watching your mods with interest.
Sir Joe, Buy a donkey for those flowers. Will gitterdun eventually on Old Fugly. This "build" has been in the works since 1987. About 34 years, so hopefully before it becomes 35 years. Better mag box and "Bo Peep" rear sight pending ... and musn't forget fluorescent white tape on barrel and scope for use as night sight.
More fine tuning on the Shoemaker Shinemaker Picatinny:
The details from the packaging:
Has a dual strobe mode too. Tactical strobe or it will flash as an SOS. Will either induce seizures or disorient and then signal for help.
Ron aka "Rip" for Riflecrank Internationale Permanente NRA Life Benefactor and Beneficiary .458 Winchester Magnum, Magnanimous in Victory THE WALKING DEAD does so remind me of Democrap voters. Donkeypox.