Maxim Defense Industries RDB Roller Delay Blowback System CQB Buffer Hardened Tool Steel MXM-47838. One of the main benefits of the RDB system is its ability to install on Mil-Spec AR-15/AR-9 easily. Our RDB system replaces the buffer and spring of...
Maxim Defense Industries RDB Roller Delay Blowback System CQB Buffer Hardened Tool Steel MXM-47838. One of the main benefits of the RDB system is its ability to install on Mil-Spec AR-15/AR-9 easily. Our RDB system replaces the buffer and spring of...