Reggie_375RGR : Thanks for the comment , yes, mine came with the extended magazine tube from the factory, i think my M4 is the Italian market version, currently i live overseas .
- M4-Desert Camo : Thanks for the comment,
Benelli makes 20'' barrel, i attached a photo of my M4 with the measuring tape, Benelli Brochure and the technical features page, you will see that they made 20'' barrel, and that the 20'' barrel holds 6 magnum or 7 (2 3/4) shells. but it didn't take 7 (2 3/4) rounds.
- Hookster : Thanks man! the two letters are (CI) that is sexy as ****!! 2012!! you made my day
- M4Whore : Thank you for the feedback, the thing is that they shouldn't say in the technical features page that it holds 7 rounds (check the photo i attached) ,or at least they must state that 7 rounds is for military and law enforcement only.
I wont take the risk and play with the magazine tube, am afraid to do something stupid and cause a damage to it (it cost me $$$$) you know what am saying...
About sell lengths, I tried Winchester hollow point slugs, fiocchi slugs, sellier-bellot slugs/buckshots, federal 00 buckshots, they all ranged between 2.4-2.7 inches .
Never the less, M4 is the best!