The Troy Industries SSIG-45S-HRBT-00 45 Degree Folding BattleSight Set for HK Front and Round Rear in Black Hardcoat Anodized delivers durability and dead-on accuracy for tactical use. The folding battle sights mount on Picatinny rails and fold compactly to either side, enabling seamless use with magnified optics and ambidextrous operation. A stainless-steel cross-locking system keeps the sight upright and zeroed under extreme combat conditions. The sights position apertures at factory height and are designed for same plane rail systems, ensuring reliable alignment with the rifle's line of sight. Note: Works on same plane rail systems only; will not function with railed gas blocks that differ in height from the receiver. The 45 Degree BattleSight is easy to install and deploy, combining rugged construction with quick target acquisition for fast shooting in dynamic environments.