This particular version fits a Remington 597 barrel with a notch for the sight and a set screw so that the adapter stays securely on the barrel.
So you like a clean gun barrel but hate the mess and smell of conventional cleaning products? Well we couldn't agree more. Introducing Hero - Solvent Trap Adapters. These aluminum adapters secure a 3/4"-16 thread oil filter onto the end of your barrel so the used cleaning solvent is trapped into the filter versus... everywhere it shouldn't be. Hero - Solvent Trap Adapters: saving your nose and carpet from all sorts of nasty. Your welcome.