Troy M4 Gas Block Front folding sight

BNIB Troy Front M4 Folding Gas Block Mounted Battle Sight

Troy has engineered a rugged, reliable, combat ready same-plane aperture front battle sight that mounts securely on the gas block. It offers all of the features of Troy's other Folding Battle Sights: Easy to operate, clicks solidly into place and folds out ot the way when not needed. 

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