The Troy Industries SSIGFRSROBT00 is a Rear Folding Battle Sight that boasts a sleek profile, measuring just 0.460\" when folded. Built using durable 6061 Aircraft grade aluminum and stainless steel, its robustness is further enhanced by a hard coat black oxide finish.One of the distinguishing characteristics of this sight is its constant access to fixed sights, which are known for their ability to hold their zero consistently.