I need to reduce the draw length to 29", from 31" on my sons Jennings Buckmaster. Does anyone know where, or how, I can get an O4 module?
I'm still shooting a Buckmaster G2 from like 2001. Retiring that now at the end of this year and getting something new. Check eBay. Some parts can still be found. Mine is mint and 29" draw. Going to be selling soon but not worth it for you to buy just for that. Def do some digging. Bow still shoots great. Even killed a dear with it this year. Good luck.
eBay would be your best bet. When I had mine that's where I found a module for it. Outside of that maybe doing the research and finding shops that carried that brand that could have one lying around. Not sure where you would find that info though.