Home / AR's / Guntec USA – .625 diameter steel two set screws – Guntec USA – .625 diameter steel two set screws – Category: AR's Product ID: 12528 Description Description Guntec USA – .625 diameter steel two set screws – Related products Birchwood Casey Gun stock – Sealer and filler 3 oz bottle LUTH-AR The Chubby Grip – AR Pistol Grip Part No. 710 Birchwood Casey Barricade Pen Rust Protection – 1 fl. Oz pen Birchwood Casey Cleaner-Degreaser – 3 oz bottle