Troy Industries Front Folding HK Gas-Block Mounted Battle Sight (Black)
The Troy Industries Gas Block Mounted Front Sight. It’s been a long wait, but Troy has engineered 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.     - Mounts securely on the gas block. Offers all of the features of Troy’s other Folding BattleSights.  - Built-in swivel attachment on both sides  - Black