Made for 45 cal suppressors. Allows you to be able to load muzzle loaders with out removing the suppressor. 304 stainless neck with a machined alluminum funnel head. 
.460" I.D.x .500" O.D.x 10" in length. These can be made to specific length before ordering please reach via email so we can verify length needed. 
 
This will allow you to save from buying an expensive quick disconnect system and simply leave the suppresed device on the rifle.  Also no reason to burn your hands at the range or waiting for the device to cool off. Like to think of it as a load and go.