The Picatinny Rail for Prism Scopes can be attached to the top of their 2.5x Prism scope, product PAC 2.5 X. Simply secure the rail section using the two included screws. Then attach your Micro dot or reflex sight to it as a secondary optic. PARPS features a 1 year warranty.
This rail is also compatible with legacy PAC4X prism scopes.