Does not exist. The 742 is a semi-auto.
I'd try Numrich at e-gunparts.com first.
The 742 is a 740 semi auto with the feeding problems fixed. Made from mid 1950's until it was replaced with the 7400.
First lets state that your rifle is a Remington model 742 Woodmaster semi-auto 30-06 rifle ,not a Winchester.these rifles normally sell in the range of 275-350 dollars depending on overall condition and a good bore.
It's probably best to ask a expert.
Your remington model 742 rifle is valued at between 275-350 dollars.
First, get a copy of the owner's manual. If it was made by Browning, go to Browning.com and request one. Second, follow the instructions.
You can request a manual from the company.
An autoloading centerfire rifle made from 1960-1980
Best to ask a gunsmith for assistance.
A model 742 magazine
Ask a gunsmith for help