FMA FBUS Gen3 Iron sights - Black

FMA FBUS Gen3 Iron sights - Black The new Gen3 folding back-up iron sights by FMA are a great option if you need some standard sights to temporarily replace your dot sight is it runs out of battery or gets damaged. They fold and lock down in place sitting flat to the 20mm rail they're mounted on and use a simple button on each sight to quickly deploy them at any time. The front sight elevation is adjustable to help assist you with aiming and the rear sight is adjustable for windage as well as having a small and large aperture depending on what range you're shooting at. Features: Polymer construction Windage and elevation adjustment Quick deploy buttons Locks down easily Mounts onto any 20mm RIS rail Colour: black