- Benelli M4 Extension Tube - Fits Full Length 18.5" M4
- Full length +1 (3") Extension - Allows maximum of 5 x 3" Rounds
- Made From Sold Bar Stock, Cold Finished 12L14 Steel
- Black Oxide Finish
- Easy-to-install
- Does NOT Require Change Of Spring, Uses Factory Original
- Made in USA
$99.00