Fully compatible with a wide variety of FN firearms, including the Five-seveN pistols, FN PS90 carbines, and FN P90 submachine guns, the 5.7x28mm cartridge has been specially tailored to excel in several specialized roles. The SS195 LF and SS198 LF rounds use an innovative, lightweight, brass-jacketed, aluminum-core hollow point bullet. The SS197SR, distributed in the U.S. by Federal Cartridge Company, is ideally suited for sports and training applications. FN also offers 5.7x28mm restricted ammunition (duty, tracer, subsonic) for law enforcement and military sales only. The SS190 duty round has been designed to minimize the risk of over-penetration. The L191 tracer and SB193 subsonic rounds, as well as blank rounds for training and simulations, are also available from FN America. All restricted ammunition is only released and shipped from a U.S. Customs-Controlled Bonded Warehouse (CBW) upon BATFE and U.S. Customs approval.