Not only does a vented rib on a SXS not transmit barrel heat to the top surface of the rib thereby creating distorting heat waves but it also allows for a rib positioned higher at the breech end than at the muzzles (in order to have a more elevated POI) while eliminating the additional weight necessitated by a solid rib thick enough to replicate the same POI characteristics as the vented rib.

Last edited by DAM16SXS; 11/17/11 11:36 PM.