I dont know what this is on end of barrel,but i like it

Looks like a large muzzle brake, as used on some .50 BMG rifles.

It might reduce recoil quite a bit, but it would be awfully loud.

Another "tactical" gizmo.

is it a muffler off a truck?

Good grief!

Talk about TackyCool!
Cept it isn't even cool!

rc

its a barrett style muzzle brake. I doubt it would work very well because there just isn't that much gas or pressure to work with in a shotgun

Mossberg is nothing if not responsive. I'm waiting for the "homeboy 12" version with sights mounted on the side of the receiver.

Mossberg strikes again... sinking ever lower in the process. It's a muzzle brake, of the design usually found on Barrett .50BMG rifles.

The gun is known as the Road Blocker. It's been "featured" here before.

But whatever turns your crank. http://www.mossberg.com/products/default.asp?id=5&section=products

lpl

Road Blocker might be an apt name for it.

You could toss it under a speeding getaway car like a spike strip, and the funky looking fake brake would cut the tires to shreds like a cheese grater!

rc

I doubt it would work very well because there just isn't that much gas or pressure to work with in a shotgun

Click to expand...

Well, that's an interesting question.

I'm a real nonbeliever in ported shotguns. I don't think the ports do anything but make the gun louder and harder to clean.

But the Barrett-style brake does redirect whatever pressure there is, with enormous baffles. If anything actually works to reduce the recoil of a shotgun, it would be something like that.

Not that it's pretty, of course...

I think they should turn it 90 degrees and block the bottom ports so it helps hold down the muzzle on that PG shotgun.
If it actually does anything at all.

rc

I believe that's called an abomination.

It would be an abomination on the end of a Krieghoff.

On a pistol-grip Mossberg? Ah, whatever.

I'm a real nonbeliever in ported shotguns. I don't think the ports do anything but make the gun louder and harder to clean.

But the Barrett-style brake does redirect whatever pressure there is, with enormous baffles. If anything actually works to reduce the recoil of a shotgun, it would be something like that.

Not that it's pretty, of course...

Click to expand...

Way back when I was a member of the FCSA, they ran a series of muzzle brake tests and I'm forced to admit my surprise when it was noted that the direction of the ports didn't matter - there was no "jet effect". At least in the case of the .50BMG, the effectiveness was derived from capture and transfer of momentum of ejecta by the chambers. The port direction was psychological warfare. One of the most effective brakes was the Vais which included ports directed downward and forward.

My wild guess is that the Mossberg's only recoil reduction will be traced to the weight of the brake. It probably does direct some noise to the shooter. All pain, no gain.

It's probably dicey of me to take .50BMG rules and apply them to a shotgun. But port direction is immaterial at .50BMG pressures and I've never figured out how it would suddenly become an issue at shotgun pressures. That pretty much applies to any barrel porting - a little cocktail napkin cipherin' leads me to believe that exhaust mass and velocity, in order to be effective a combating muzzle rise, would rapidly erode the top barrel of an O/U. The observation that it only "powder puffs" the top barrel leads me to believe that all it really does is create a need for cleaning supplies.

Regards,
Father skeptic and curmudgeon in training.
Filed under "stuff I believe but can't prove".

Well it got your attention.... and somewhere, somebody is buying these things..

A car in every driveway, a turkey in every oven and a Mossberg in every hand...

Back when shells were made of paper and brass, there was The Cutts Compensator. An external choke device, it also featured large slots serving as ports.

They were popular with skeet shooters but not trap shooters.

Why? Because trap shooters stand along side one another when they shoot and skeeters do not.

Redirecting those gasses made those shotguns super loud. Turning recoil into noise, they did provide some small kick mitigation but not enough to matter in the long run.

Few survive now. Plenty of shotguns have had these removed and been threads for choke tubes instead.

Ah, Progess.....

As for the item in question, Barnum's comment about one born every minute applies....

Mossberg has come out with a lot of tacticool crap lately. Maybe it sells.

I'd be tickled to death if they'd thread their defense guns for chokes.

I wonder if you put a stock on that peice of tacticool junk and used it for deer hunting with slugs if it would be a good youth slug gun.(although I guess it probably is just for looks as they have it on a 22)

i really think the weight of it is the only thing helping with recoil reduction....

Post number 19 is what I have in mind.

What is next, a Hydraulic Recoil system near the ejection port on the receiver?

Love it when them there big dawggies get fed and eat.

Great! now you cant mount a bayonet on that bad boy!!!

Looks like a waste of someone elses money as I'd never buy anything like that but if they're happy, I'm tickled to death.
IMO, if that is a Mossberg design idea, it's nothing more than a gizmo gimmick to impress the mall ninja types. But if it sells a few shotguns, maybe it's doing what it was designed to do.

Hey!
They have the Rolling Thunder No Country for Old Men fake suppressor/car muffler model too!

Must be the Mall Ninja niche market all right!

This one here is much more sensible!
http://www.mossberg.com/images/Mossberg_Guns/930/New/51340.jpg

rc