TruGlo Brite Site Fiber Optic Handgun Sight S&W M&P Price_Under $25 3:1 Retrieve Rate: 30 76cm Braking 3:1 Retrieve Rate: 30 76cm Braking System: Magnetic Bearings: 9 8 stainless steel ball bearings + 1 roller bearing provides smooth operation X2 Crftic alloy frame for increased corrosion resistance Carbon Matrix drag system provides smooth comfortable and built to perform from the inside out Tru Glo Brite Site Fiber Optic Handgun Sight S&W M&P The TRUGLO BRITE SITE Fiber Optic Sight utilizes fiber optics for the brightest aiming points for fast target acquisition even in low light conditions it features unbelievable transition through all light conditions