The Marines channel on YouTube are showing of their new door breaking shotgun. The older shotgun has been redesigned with a shorter barrel that is vented and has a saw-tooth edge. They’re calling it the Military Enhancement Kit. The pack enlarges the M500A2 pump-activity shotguns, which are right now utilized by security forces, military police, special forces and Marine units. Undoubtedly, what makes the shotgun so good is that it is so adjustable, as the new Military Enhancement Kit represents. It’s essentially the shotgun variant of a M16.