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AR15.COM
2/5/2003 9:59:02 PM EDT
Professional Ordnance use to make an adapter for their post-ban Carbon-15 pistols and rifles that attached to the barrel (via the compensator groove cut in the barrel). The other end (business end) had standard threads (1/2-28 or 5/8-11) to attach a post ban compensator. Is this legal? I have the feeling that BATF would consider this the same as having a threaded barrel. I’m not sure how POI stands on this issue, since they have gone out of business. Anyone have any suggestions?
2/5/2003 10:36:32 PM EDT
[#1]
If the gun has "threads capable of accepting a flash suppressor", and that would put it over the allowed feature count, it's illegal.  If that wasn't the case, why wouldn't they ship one with every rifle?

-Troy
2/6/2003 4:10:27 PM EDT
[#2]
This is a bit of a gray area, since the AW ban forbids [b]"(iv) a flash suppressor or threaded barrel designed to accommodate a flash suppressor"[/b], and a slip or screw-on adapter is definitely not a threaded barrel.

If the adapter were installed permanently, it would become part of the barrel, and be illegal.  But, as long as it's not permanently installed, and you don't mount an actual flash suppressor, I can't see that it's forbidden by the letter of the law.

ATF has very strict standards for what constitutes "permanent" mounting of a muzzle device, as well - so even a semi-permanent installation, but without welding or silver soldering would be legal, reading the statute strictly.

It obviously violates the spirit of the ban, so you might not want to do it and take a chance on drawing unwanted attention, though.