"Looking for rock solid stability and dead-on accuracy in a fixed sight? Troy Industries Fixed BattleSights? get the job done. This permanent rail-mounted alternative to a standard A2 sight allows limitless mounting options on all-length rails with a serrated ramp to eliminate glare. Provides a continuous zero unflinching durability and peace of mind. The Troy Rear Fixed Rail Sight is designed to work on same plane rail systems only. Will not work with a railed gas block that is higher or lower than the receiver.

Features:

• A permanent rail mounted alternative to a standard A2 rear sight or carry handle.
• Provides constant access to fixed sights that continuously hold their zero.
• Extremely durable and reliable providing peace of mind.
• The most rugged fixed rear sight available.
• Fits all M4 M16 AR15 AR10 variants and other firearms that have a flat top receiver or removable carry handle.
• Machined from hardened Aircraft Aluminum with stainless steel components and finished in MIL-SPEC hardcoat anodizing.
• Sight is designed to work on same-plane rail systems only.
• Will not work with a railed gas block that is higher or lower than the receiver.
• Front sight must be mounted at the same height plane as the rear sight. Railed gas blocks that are lower than receiver height will not zero properly.