Mk11 gas block flip-up front sight (BUIS)

Knights Armament authentic and new old stock (NOS) 

The Knight’s Armament KAC Mk11 Folding Front Sight is an authentic component for Mk11 Mod 0 sniper rifle builds. Designed to mount on the gas block of the Mk11, this push-button flip-up sight folds backward into the free-floating rail, maintaining a sleek, low-profile appearance when not in use.

Features:

• Authentic Mk11 Mod 0 front sight – Correct for clone builds
• Folding push-button design – Stows cleanly into the rail
• Gas block-mounted – Secure and stable sighting solution
• New old stock (NOS) – Hard-to-find discontinued part
• Made by Knight’s Armament – Military-trusted precision manufacturing

Now discontinued and rare, this new old stock (NOS) sight is essential for clone rifle builders looking to complete a true-to-spec Mk11 Mod 0. While the Mk11 and M110 share the same gas block, this sight was specifically issued with the Mk11 sniper system and is not found on the M110 SASS.

For sniper rifle enthusiasts, this KAC folding front sight provides an accurate clone-correct solution, ensuring authenticity in military-style designated marksman rifle (DMR) builds.

This highly sought-after component is ideal for collectors, clone builders, and long-range shooters seeking an original KAC Mk11 Mod 0 front sight.