PW Arms Panzer Extension Tube Benelli M4 12 Gauge 7-Round Parkerized

This PW Arms Panzer Extension Tube is designed for the Benelli M4 and Panzer Arms M4 clones. The threaded tube replaces you magazine cap and gives you the ability to add extra rounds to your magazine without any permanent modifications to the gun. The magazine extension tube is great for home protection, competition shooting, and law enforcement.