Benelli M4 Titanium Magazine Extension +2-round Panzer M4– NO. Aska M4 – YES. Gforce Arms M4 – NO. Rust proof: Titanium will not rust like steel 2rd extension tubes. Color: Custom matched dark gray Cerakote to closely match the dark gray Parkerized barrel that can be darkened with a light coat of oil.
You pay a little more for basically a small piece of metal but if you paid good money for a Benelli why not fit it with original parts of high quality?