Problem:Picatinny Railed Gas Blocks do not accommodate a same-plane aperture front sight.
Solution:The Troy Industries Gas Block Mounted Front Sight.
Troy engineered a rugged, reliable, BattleReady
Developed by ACME in 1883 for Scotland Yard and Metropolitan Police. Used extensively for the armed forces through out World War I and World War II. This high decibel whistle can be hea