As far as I know you can't. However, I see Harris has a few new items they didn't have a few years ago. Such as a swivel mount for a rail. However your wood stock doesn't have a rail.I just ordered the 1A2-LM 6"-9" (without the swivel) from Midway for $75.
I am nothing like my brother...6'1" and 165 lbs so hopefully this will work.
Can I add a swivel later on?
Enter your email address to join: