Troy Industries Front Folding Tritium M4 Style Battle Sight (Black) Sight can be moved or taken off without permanent modification to the firearm. A stainless-steel cross-locking system ensures sights remain upright and zeroed under extreme combat conditions. A push of a button folds the sights securely out of the way until you need them again. Machined from hardened Aircraft Aluminum with stainless steel components and finished in MIL-SPEC hardcoat anodizing. Each click adjusts .50 MOA.