I take it you have an H&R M12?
Winchester had been supplying the US military with their Model 52. Used as a trainer rifle.
Winchester had the contract to supply "replacements" for .22 training rifles without competitive bid.
The Army wanted to order more Win 52D/E models to replace rifles that were worn out.
Winchester said "no.. not interested... at all."... Gave up the contract.
Then the Army was forced to open it up for bid.
H&R "cloned" the Win 52 with their M5200, and so the H&R M12 was born.
Stocks are as ugly as a salt treated fence post. Extremely good rifles. May need some trigger tune up, but can run with $2500 rifles. Not a lot of them made.