Too bad, mine is for about a .900".......
Here is what I have found with the two piece; it is hard (impossible?) to get it tight enough to keep it from rotating on the barrel under the kinds of sideways stress a sling put on, and Im pretty careful. That can/will marr a barrel. The epoxy on also may help this, dont know as I decided that I just cant trust the 'easy on' design to keep from failing and dropping one of my guns onto the dirt and rocks.
Spend the extra and get a one piece or do as I have done and get a sling with a sewn down barrel loop and a buttstock sling swivel, no front swivel required and it fits everything. It just isnt as sexy looking as the barrelband type.