Quoted: Question... even if a muzzle brake is premanenently attached, and the OAL is at least 16", couldn't it still be considered a grenade launcher"? IIRC, under the 94 federal ban, a muzzle device had to be a certain diameter (I believe it had to be more than 23mm).
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Hmm, thats a good one. Though a barrel launched nade requires a blank grenade launching round, and if you dont have one, then you dont realy have a complete launcher. Though I seem to remember that birdcage breaks were not considered GL.
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The birdcage brakes are most likely too large to accept any known rifle grenade.
"Grenade launchers were already illegal and regulated by the ATF as "Destructive Devices". However, most militaries use an item known as a rifle grenade. This grenade attaches to the muzzle of the rifle and is launched by firing a round (or special blank round) into the base of the grenade. Since civilian flash suppressors were identical in diameter to military flash suppressors, they were capable of using this grenade (although possession of such a grenade is illegal and unlikely). For the purposes of this bill, this made these flash suppressors into "grenade launchers"."
www.ont.com/users/kolya/AR15/aw94.htm"A semiautomatic rifle capable of accepting a detachable magazine
and having a threaded barrel designed to accommodate a flash
suppressor would be an assault weapon as defined in the above
statute. A rifle would not be considered to have a threaded
barrel if threads were covered by a muzzle brake which was
permanently attached to the barrel by welding or high temperature
(1,100 degrees Fahrenheit) silver solder. The muzzle brake must
not additionally function as a flash hider or grenade launcher."
www.cs.cmu.edu/afs/cs/usr/wbardwel/public/nfalist/atf_letter11.txt"A firearm having a muzzle brake, cap, or barrel extension
permanently attached by those same methods to cover the threads on
a barrel, would not be considered to have a threaded muzzle.
Please note, however, that any muzzle device or barrel extension
which functions as a flash suppressor or grenade launcher would
still constitute one of the qualifying features of a semiautomatic
assault weapon as that term is defined in 18 U.S.C. section
921(a)(30(B). Industrial adhesive products are not an acceptable
method for permanently attaching a muzzle device."
www.cs.cmu.edu/afs/cs/usr/wbardwel/public/nfalist/atf_letter40.txtThe real question is, whats the difference between a flash suppresor and a muzzel break?
A FS is bored out in a larger dimension...
A muzzle brake is bored out in the caliber dimension of the firearm it is designed for...