??? Muzzle Brakes / Flash Hiders ???

[toomanycamaros]

@Mazdaspeed6

I prolly should know this but in New York can we have Muzzle Brakes and/or Flash Hiders on an AR15 (S&W M&P15). If so do we know any very friendly machine shops who can machine threads on the end of my barrel to allow me to screw one on?

No threaded barrels allowed on ARs. (piston grip and threaded barrel make it an assault weapon)

check nyfirearms.com they have a list of all the laws.