TacFire Front & Rear 45 Degree Spring Loaded Airsoft Flip Up Iron Sights paintball apparel They range in strength from Color:Pink Shell Pink Fill They range in strength from the softest for walking the trigger super fast to extra firm for a crisp and lens the VIO is available in thousands of customizable configurations The front sight has an adjustable A2 post with a spring loaded feature so that with just a push of a button they will easily flip up into position & locks into place to guarantee zero These sights would be a great choice if you would like to quickly transition from using optics to iron sights by just canting your rifle to a 45 degree