H&R Reising Model 65 .22lr

Hi all,
Thank you for allowing me to become a member of this fine forum.
I own a H&R Reising Model 65 .22lr. Serial # 14xxx, WW2 civilian purchased rifle.
Tracking down info on these USMC trainers and civilian retail rifles has become a very enjoyable hobby.
I need to find a nice Reising type sling, and also an original magazine catch.
I've substituded a model 151 type mag catch, but it is a temporary fix only.
:wave:
This is the type of mag catch I'm looking for:

Thanks again,
Mike