I live in NJ unfortunately and my m&p or did not come with one. My barrel is not threaded because that's illegal in NJ how do I go about getting one added to my gun

O M G---DON'T YOU KNOW THAT'S ILLEGAL ! ! ! YOUR 1ST HURDLE IS TO FIND A MACHINIST OR 'SMITH WHO WILL THREAD YOUR BARREL. THEN YOU NEED TO SCOUR THE INTERNET FOR SOMEONE WHO WILL SHIP TO THE ACCURSED STATE THAT YOU RESIDE IN. OTHER THAN COSMETIC, I DOUBT THAT THE MUZZLE BRAKE WILL MAKE A GREAT DIFFERENCE IN THE PERFORMANCE OF YOUR GUN. ITS ALL JUST STUPIDITY……….

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'Nam 1968-69.DAV,VFW,NRA Inst.

First, you need to check New Jersey law and determine what muzzle brakes are legal... I'm not from New Jersey, so I don't know any particulars about the law...

Then, once you determine what you want and it is legal, you will need to have a gun smith thread the barrel, put the device on, and solder it in place. It can not be removable...

I see tons of NJ plates down here - why isn't yours one of them?

COME ON DOWN!

In the meantime though...get the barrel threaded, pick a muzzle device and have it welded (soldered) on - you know, not removable. It you can't take it off it's legal up there, correct?

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M&P's and K Frames Pleeze!