Optimize your rifle with Geissele's Maritime Bolt Catch. This rifle part is compatible with any platform deigned to accept any mil-spec M16/M4 carbine bolt catch, and offers a larger surface area. This makes operation easier when locking the bolt back, or releasing the bolt after a magazine change. An added benefit of the Maritime Bolt Catch is increased usability for left-handed shooters, as it is easily in reach of their index finger and they won't have to break their grip to manipulate the bolt. Other features of the Maritime Bolt Catch include aggressive checkering on the surface of the levers, providing tactile feedback for shooter wearing glove or in low light environments. In addition, the Maritime Bolt Catch is manufactured using heat treated 8620 steel and is coated in manganese phosphate for excellent resistance to corrosion and the elements. Features of the Maritime Bolt CatchCompatible with any platform that accepts mil-spec M16/M4 carbine bolt catchesHighly suited for left handed shootersAggressive checkering on surface of the levers Geissele Maritime M16/M4 Bolt Catch 08-153