The FBSFHBT02 model by Troy Industries features Tritium Battle Sights, expertly engineered to eradicate poor sight orientation commonly experienced in twilight conditions. Tritium, a specific type of hydrogen, offers a consistent light source when batteries or external electricity aren\'t accessible. The sight\'s front post sits centered between two Tritium reference points, thus ensuring proper alignment.What\'s more, our HK Front Folding Battle Sight is effortless to install and utilize, with no need for tricky levers, springs, or tools for adjustment purposes. It boasts a flexible design which permits easy movement or removal without causing irreversible modifications to the firearm.For added reliability, our sights incorporate a stainless steel cross-locking mechanism to keep them upright and correctly zeroed under severe combat situations. Quickly and securely fold the sight out of view with a simple button push, until you require its use again.This model is carefully machined from hardened aircraft aluminum, supplemented with stainless steel components, and complete with a Mil-spec hardcoat anodized finish. A refined adjustment feature offers incremental changes of .50 Moa with each click.