Ministar Roger 10 / 22 Threaded Pipe Adapter...
For Ruger 10/22s fitted with a bead front sight + without a threaded barrel
Barrel adapter for Ruger 10/22 with 1/2"x28 Accessories
Tighten with 3 Black Set Screws
Allen wrench tool included in order
Material: Aluminum thread adaptor , knurled Steel Thread Protector