all weapons catches are pretty much the same. the one T7 posted it all you would need.
there are a few here: http://www.extremeoutfitters.us/brow...ts/Index5.html
BHI has a few: http://www.blackhawk.com/Catalog/Pro...h=catch&type=Q
it's more universal and you don't require a short lead and buckle attached to every weapon you want to run without having to swap it out when you swap out your primary.