RXM-300 Type A & B Screw Set
RXM-300 Type A & B Screw Set, This is a replacement set of 2 screws of each of the following to attach the unit to the mount: Type A: 6-32 UNC 9.8mm long Use for direct mount applications with shallow tapped holes. (Screws protrude from the sight base approximately 2.4mm.) and Type B: 6-32 UNC 11.8mm long Use with mount or for direct mount applications with deeper tapped holes. (Screws protrude from the sight base approximately 4.4mm.)