Benelli Ethos The ETHOS is an elegant semi-automatic shotgun that is the culmination of Benelli&';s innovation, refinement, and design superiority. The core of this exceptional firearm is our ultra-reliable, time-tested Inertia DrivenA(R) System, which makes the ETHOS a joy to shoot and easy to maintain. Specifications Caliber or Gauge 12 / 28 Barrel length (Inches) 26" / 28" Chamber (Inches) 3" Choke CrioA(R) - C, IC, M, IM, F Product Type Shotgun FEATURES: Inertia-Driven SystemA(R): Benchmark of Reliability. An inertia-DrivenA(R) System shotgun is clean, reliable, and adjustment-free. CrioA(R) System: More Uniform Patterns. Benelli cryogenically treats barrels and choke tubes to increase pattern density. Progressive ComfortA(R): Incorporates three sets of patented interlocking flexible buffers that absorb recoil at different stages dependent on the strength of the shotshell&&';;s load. Cycles Light Loads: The updated dynamic Inertia DrivenA(R) System improves cycling speed, reliability, and the ability to cycle loads from 7/8 oz. to 3-inch Magnums. Easy-Loading System: A beveled loading port, redesigned carrier and new two-part carrier latch allow the shell to glide into the magazine. Anti-seize Mag Cap: Synthetic bushing incorporated into the magazine cap prevents the cap from binding under all environmental conditions, including dust, dirt, moisture, and freezing temperatures. Interchangeable Fiber Optic Sight: Easy to change high-visibility fiber optic sight system offers the option of three colors (red, green, yellow) and requires no tools to switch. Model Number: 10452