This addon re-skins the dual pistols into classic vanilla style dual pistols, and changes the Zombieman and Imp meatshield pistols into classic pistols. For Brutal Doom v21 only, load after Brutal Doom v21. Videos in the comments
Credits go to kippykip and JoeyTD for the pistol sprites, Sergeant Mark IV for meatshields. Sprites are from kippykip's Dual Pistols for Zdoom addon
Any way to get this in .PK3 format, as opposed to .WAD?
I don't see what's wrong with that format. Are you using ZDL?