Rem 870 "trench gun": Does it exist?


Texas Moon
March 22, 2008, 03:54 PM
Is there such a thing as a Remington M870 trench gun?

I'm talking the real deal - heat shield, bayo lug, sling swivels, solid Hi-cap mag tube, parked, etc?
Something akin to the Mossberg 590.

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March 22, 2008, 08:59 PM
Remington made such a gun for the Marines.
It had a special extension clamp assembly made by or for the Marines that wrapped around the barrel and magazine.
This clamp also had a sling swivel and a bayonet lock.

I don't know of any 870 that was actually manufactured with a barrel heat shroud, although you can fit one.
Finding a bayonet mount for the 870 is also difficult.

The closest guns now available are the Remington Police guns:

Another way to go is to buy one of the new 870 Tactical or Marine Magnum guns and add a barrel shroud. The guns are available with the magazine extension and sling swivels.

March 22, 2008, 09:28 PM
Bayonet mounts can be found here....

Fred Fuller
March 22, 2008, 11:43 PM
There was the Remingon 870 Mark I, as mentioned above. It had provisions for mountaing a bayonet (the same one used on M-16s). It was prototyped both with and without a heat shield. It was (as far as I know) not issued with the heat shield however. The USMC's 870 Mark I shotguns were prominently displayed on 12 May 1975 when the container ship Mayaguez was recaptured near Cambodia.

There's a pic at .



March 22, 2008, 11:49 PM
The military 870s have a unique magazine clamp/ bayo's this humongous beefy looking thing (and I'd love to have one- ultimate extended magazine clamp). You can buy them, but they are a bit rare...

Check out the rest of that S & J hardware site, ya'll. Real cool.

March 23, 2008, 01:01 AM
S&J's mount is suposed to be pretty beefy but I'd add a second mag tube clamp to help support the extended mag tube if I was inclined to mount a bayonet on my shotgun....really the 590 A1 is the way to go if you want a bayonet.

May 8, 2008, 05:52 PM
Sorry to resurrect an older topic, but I googled usmc mark1 after seeing a picture of one that a guy has on another site, and after reading all of your guys' comments I thought you might enjoy seeing the pics of one of these in mint condition.

May 8, 2008, 10:46 PM
I've never seen one in person. They are immediately noticeable due to large mag tube attachment.

May 19, 2008, 03:02 AM
They weren't just a USMC-issued weapon, I saw my first examples being used by SAC missile crews in the late 1980s. The DoD 870Mk1 shotguns look something like this, although I installed a synthetic black stock on mine:

Note the beefy magazine tube clamp/bayonet lug assembly, seen here in close-up view:

Another view, blade attached:

As thin as shotgun barrels are, it only made sense for the military to stiffen things up like they did with the 870Mk1's unique configuration. Skitching somebody or something with an attached bayonet would raise heck with the barrel were it not fortified somehow. Hence, the beefy front end.

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