Leupold Mark 4 IMS 20MOA Rail INSERT

LEUPOLDA(R) MARK 4 MODULAR IMSA(R) - 20-MOA CANTILEVER RAIL INSERT (RISER) a Use the Mark 4 Base in conjunction w/Mark 4 Cantilever Inserts a Mark 4 Cantilever Inserts require the Mark 4 Base & cannot be used alone or w/any other system a Base & inserts sold separately a NOTE: 20-MOA Cantilever Rail Insert (Riser) attaches to the Mark 4 Base & provides additional elevation for long range targets IMSA(R) (INTEGRAL MOUNTING SYSTEM) a Quickly & easily eliminates the two most common issues faced when mounting standard riflescopes to AR-style rifles; Scope Height & Eye Relief a Eliminates the need for risers or specialized optics w/shortened eye relief a Tested to endure the rigors of the field a Matte black hardcoat anodized aluminum