The SP-90 suppressor was designed to FN design parameters and rigis SOCOM specifications for the FN P90 Personal Defense Weapon. It features the patented Gemtech Bi-Lock™ mounting system on a proprietary Bi-Lock™ flash hider on the P90 PDW. The suppressor measures a scant 7.25 inches in length by 1.37 inches in diameter, and reduces the sound level of the weapon by approximately 33 dB, varying slightly with the ammunition used. This robust unit is manufactured from 100% stainless steels, features a matte black oxide finish, and can be used with all ammunition without damage to the weapon. The SP-90 exceeds military salt water test requirements. It is rated for semi-automatic, burst, and fully automatic fire. Also available is the S-FN57 suppressor. It was specifically designed for the new FN-Five-seveN pistol.