Hyson
Welcome to the forum.
I have a couple of 10/22's and bought a few of the ready made replacements, but in my searches have found this to work well.
Go to your local hardware store and purchase a 1/4" x 3" NYLON Bolt. The ones that I found have threads that are about three quarters of an inch long, with over two inches of shoulder. Just cut the shoulder to the width of the receiver, and for about a dollar you have a nice durable quiet buffer.
If it fits a little tight, just sand it a little with some sand paper or emory cloth. I don't know where you live, but I found them in one of the local big box stores. It was either Lowe's or Home Depot. Can't remember which, but one carried it ,and one didn't.
Gumby