Troy Industries Front Fixed HK Style Battle Sight (Flat Dark Earth )
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.    Features:    - 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  - Hardened T6 Aircraft Aluminum with stainless steel components  - 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.  - Flat Dark Earth