The EAA Girsan MC312 12 Gauge Shotgun, 18.5-Inch Barrel, Black Synthetic is an inertia-driven 12 gauge imported by European American Armory (brand part no. 390165). Girsan built the MC312 line to survive punishment: EAA has run 5,000-round tests with no cleaning and 10,000-round endurance tests with no parts replacement on this platform. With a compact 18.5-inch barrel and black synthetic furniture, this configuration leans toward home defense and truck-gun duty rather than the field, and it is built to keep running when it matters most.

Key Specifications

• Inertia-driven semi-automatic action cycles a wide range of loads with fewer moving parts to clean or replace.
• Chambered in 12 gauge with a 3-inch chamber.
• Compact 18.5-inch barrel suited to close-quarters use.
• Rated 5+1 capacity for five shells plus one in the chamber.
• Ships with five choke tubes for pattern flexibility across loads.
• Fixed high-visibility front sight for fast target acquisition.
• Black synthetic stock and forend stand up to hard use and bad weather.
• Overall length of about 36.7 inches keeps it maneuverable indoors.
• Ships at approximately 9.8 pounds in its case.

Frequently Asked Questions

What gauge and chamber does the MC312 use? 12 gauge with a 3-inch chamber, cycling everything from target loads to heavier defensive shells.

How many choke tubes come with it? Five choke tubes ship standard for a range of shot patterns.

Is this a field gun or a defensive gun? The 18.5-inch barrel and black synthetic stock point this configuration toward home defense and truck-gun use rather than upland hunting.

Buy the EAA Girsan MC312 12 Gauge Shotgun, 18.5-Inch Barrel, Black Synthetic

Backed by EAA Corp and proven through brutal endurance testing, the MC312 is built to be a go-to gun you never have to think twice about. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and check out our other semi-auto shotguns if you want to compare barrel lengths and finishes.