All,
I know all about postban BS. I want to SBR a post lower but keep most of the "look" of a pre. I'll go with a decent looking brake. I think I know what ATF's position on this is if I ask, "No!". What about a front site post with a bayo lug on it, but mill off the locking parts so it will no longer be a bayo lug, but a "nub". A bayonet will no longer lock or fix to it. Anybody see a problem with that?

From a distance it will still look authentic.

Suggestions?

Thanks.

Mind you, all this would end up being is a slick sided, square piece of metal incapable of mounting a bayonet. It would strictly be for "the coolness factor". You wouldn't be able to mount a bayo anyway because there would not be enough barrel in front to support it.

Troy, can you post a link to BATF opinion?  I know they like to make up law as they go, but I have never heard this one before.  If it cannot accept a bayonet, it is just another piece of extra metal on the front sight assembly.  

The latch on the knife can still lock onto to so-called "nub". So it would still be a "bayonet lug', irregardless that the flash hider would not support the end of the handle via the support plate.