MRA Red Dot Optic Master Screw Pack These are all of the screws that come with the MRA kit to mount red dot optics. Save some money by bundling them all together. Each set comes with 2 screws: (2) M3 x 8mm Flat Head Screws (2) M3 x 9mm Flat Head Screw (2) M3 x 6mm Flat Head Screws (2) M3 x 6mm Socket Head Cap Screws (2) 6-40 Flat Head Screws - RMR (2) M4 x 10mm Rounded Head Screws You can find all of the individual hardware here. Thank you for your interest in our products. Check out our FAQ for answers to common questions and feel free to contact us at [email protected].