Troy GBFOMFT00 Battle Sight Front Gas Block Mounting M4 FDE

The Troy Industries Gas Block Mounted Front Sight is a rugged, reliable, combat ready BattleSight that mounts securely on the gas block. It offers all of the features of Troy's other Folding BattleSights - easy to operate, clicks solidly into place and folds out of the way when not needed. It is not compatible with four-sided rail gas blocks.