I think the 1/2x20 is the Brit std thread for 22 rimfires ? , ie Parker Hale cans , and the 1/2x28 is std for AR15 rifles , I would not thnk it would matter too much which you picked ?
I think the 1/2x20 is the Brit std thread for 22 rimfires ? , ie Parker Hale cans , and the 1/2x28 is std for AR15 rifles , I would not thnk it would matter too much which you picked ?
Bookmarks