Carlson's Shotgun Magazine Extension for Benelli M4 12 Gauge 7-Round

Carlson's Shotgun Magazine Extensions Tube For Home Defense, Tactical and Law Enforcement Use add firepower to your favorite shotgun. These magazine extensions are constructed of blued solid steel and come with a spring. The threaded tube replaces you magazine cap and gives you the ability to add extra rounds to you magazine. Easy to follow instructions are included. The magazine extension tube is great for home protection, competition shooting, and law enforcement.