Girsan MC312 HDT(Heavy Duty Tactical) 18.5″ INERTIA-X DRIVE


Girsan MC312 HDT(Heavy Duty Tactical) 18.5″ INERTIA-X DRIVE

(6 customer reviews)
100% of buyers said they were satisfied.

$249.00 $236.55

At, we are proud to offer quality products to our customers. Very few products are as exciting as the Girsan MC312 line! 
The HDT (Heavy Duty Tactical) is designed with the Tactical Professional in mind. The pistol grip configuration allows the tactical operator to use heavy magnum tactical loads with less felt recoil, resulting in faster follow-up shots on target. Due to the operational design of Inertia shotguns, proper shouldering is required for problem-free cycling with any variant of shells – from light to heavy loads, 2 3/4″ to 3″ in any load configuration.
Featuring the Inertia-X Drive, these Girsan MC312 shotguns are fast becoming one of the most talked-about shotguns on the market. This action is reliable, requiring no adjusting – ever.  It remains cleaner than other gas operating systems, allowing the gas, smoke, and burnt powder to remain in the barrel, which means less maintenance required. With only three main parts, it’s one of the simplest, yet one of the strongest, lightest-weight, and most perfectly-balanced systems out there.Each of these shotguns undergoes individual quality control tests from Girsan before shipment to ensure proper functionality.

Rib: 8×10 Ventilated Rib
Rear Sight: Ghost Ring
Recoil Pad: Rounded Ergonomic Rubber
Receiver: Aluminum-Alloy Receiver
Barrel: Specially-coated Steel
Locking System: Rotating Bolt With Reinforced Lugs
Length of Pull: 13 1/2″
Trigger Weight: 7.5lbs
Chokes: Breacher Open Choke, Cylinder Bore
Additional Features: Oversized Bolt Release,  Oversized Charging Handle, Pistol Grip, Fixed Stock


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Metal Finish Bronze Apocalypse
Action Side by Side
Gauge 12 GA / 30-30 Winchester
Barrel Length 24″/28″
Overall Length 41.25″-43.25″
Safety Tang Safety
Capacity No Magazine Included
Chamber 2.75″

Metal Finish Black
Action Semi-Automatic
Gauge 12 Gauge
Barrel Length 18 1/2″
Overall Length 37″
Safety Two Position Crossbolt
Capacity 3 + 1
Stock Fixed
Chamber 3″

6 reviews for Girsan MC312 HDT(Heavy Duty Tactical) 18.5″ INERTIA-X DRIVE

  1. Lynn Day (verified owner)

    The gun i wanted with different sights was not available to me because I’m not a Team Firearms member. That’s very poor business ! Said it was reserved for T.B. Members only. So it would have cost me $30.00 more above the price of the gun to purchase it. I guess you have to pay to be in the click !! No thanks Always find what I need. Even in the midst of COVID.

  2. Mable Williamson (verified owner)

    Was smooth and easy, which made the whole thing easy.

  3. Bryan Torres (verified owner)

    This is my second order through Firearmss and they have come through both time. Little surprised at the increased shipping cost but will order again–especially once this rush on ammo is over!!

  4. Spencer Arnold (verified owner)

    Excellent checkout, great prices and an automatic FFL finder so no calls to be made or websites to check. Great Can\\\\\\\’t afford my arsenal all at once. Layaway is fantastic This is my first time visiting and shopping with Firearms\\\\\\\’s Guns and the availability was better than most guns store in today\\\\\\\’s market.

  5. Beatrice Meyer (verified owner)

    I hickok45 advertised Firearms\\\\\\\’s in his videos.

  6. Mary Mcdonald (verified owner)

    Easy to navigate website with a large selection of items. I also had a minor issue and the chat rep was very helpful All good.

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