Meprolight FRBS Flip-Up Backup Sights, Orange Hyper-Bright Front & 2-Dot Rear

The FRBS are tritium-enhanced, self-illuminated front and rear back-up sights designed to provide the shooter secondary sights in case the primary optics go down.The advanced FRBS sights are low-profile and extremely durable. Quickly and simply flip them into position when needed. FRBS sights mount to any Picatinny rail. Sight pin elevation is easily adjusted without tools. Day or night, the tritium makes the FRBS a viable option.Proven Advantages:12 year warranty for night sight illuminationCan be used as primary or backup sightsEasy installation, always ready for action