Weapon Induced Subsonic Sound Pressure Reduction (WISSPR) small arms technology is a capability fully developed in-house by NSWC Crane. This technology allows subsonic performance in current issue weapons systems while using standard issue, supersonic ammunition. This technology aims to expand the capabilities of current weapon systems by providing the warfighter the ability to reduced signature, decreased collateral damage, and reduced range training capabilities without the additional logistic or operational burden of supporting specialized subsonic ammunition.