Six position, mil-spec dimensioned receiver extension featuring 7 ports to allow excess gas, water, oil, and debris to leave the operating system, reducing pressure and associated danger to both host firearm and shooter
Mil-spec hardcoat anodized
The longer pictured Maritime Receiver Extension is for use with AR10 systems
Shorter pictured Maritime Receiver Extension is for use with AR15 style systems
The Maritime Receiver Extension pictured without the channel cut around the detent holes is the Heavy Duty MRE for AR15 use only
