Benelli M4 EXT Titanium H2O: Maritime Protection meets Factory Performance

The Benelli M4 EXT Titanium H2O (Model 11789) is the ultimate choice for operators in high-humidity or maritime environments. While it retains the legendary ARGO gas system of the Marine Corps' M1014, this "un-neutered" EXT model features a premium Titanium Cerakote H2O finish. This specialized coating provides a high-contrast, professional aesthetic while offering maximum protection against salt spray, moisture, and hard-use abrasion.

Features Unique to the Titanium H2O EXT:

Corrosion-Resistant Titanium Finish: The receiver, barrel, and magazine tube are treated with a maritime-grade Titanium Cerakote, making this the most weather-resistant variant in the M4 EXT lineup.

Factory 7+1 Capacity: This is a 100% 922(r) compliant build featuring the full-length factory magazine tube. You get 7+1 rounds of 2 ¾" firepower straight out of the box, with the legendary ability to ghost load for 9 total rounds.

5-Position Telescoping Stock: Equipped with the authentic adjustable stock, this model allows you to transition between a compact 9.25" and a full 14.375" length of pull—essential for shooters wearing heavy gear or maritime vests.

Oversized Combat Controls: Includes the factory-upgraded enlarged bolt release and charging handle, specifically designed for positive manipulation when hands are wet or gloved.

Dual-Piston ARGO System: The self-cleaning Auto-Regulating Gas-Operated system ensures that even in the harshest conditions, the M4 cycles everything from light field loads to 3" magnum slugs with flawless reliability.

The Guns.com Range Evaluation

We put the Titanium H2O EXT through its paces to see if the finish impacted the legendary Benelli smoothness. Our range team confirmed that the Cerakote application is flawless, and the "un-neutered" 7+1 capacity provides the tactical advantage shooters have spent decades trying to achieve via aftermarket parts. The H2O isn't just a color choice; it’s a durability upgrade for the world’s most respected combat shotgun.

Read our Full Hands-On Benelli M4 EXT Review for detailed range data, patterning results, and a deep dive into the 922(r) compliance that makes this factory 7+1 possible.

UPC 650350117899

Action SEMI AUTOMATIC

Barrel Length 18.5" BARREL

Capacity 7 ROUNDS

Finish BLACK & SILVER

Gauge 12 GA

Weight 6

BENELLI-M4-EXT for Sale