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Posted: 9/14/2004 8:18:01 PM EST
Whats the differance in a pre-ban upper and a post-ban upper?

Link Posted: 9/14/2004 8:19:25 PM EST
Nothing, now.
Link Posted: 9/14/2004 8:22:28 PM EST
I see that Bushmaster has both... Is it the lug?
Link Posted: 9/14/2004 8:28:55 PM EST
Between Sept 13 1994, and Sept 13 2004 a postban upper could not have a bazonet lug, threaded brl, or flash supressor. They typically had ether a crowned muzzle, or permanantly attached muzzle break.
Link Posted: 9/14/2004 8:31:42 PM EST
So, your saying that, when I get my barrel threaded tomorrow with a f/s installed. It would be "almost pre-ban" .....cool

Link Posted: 9/14/2004 8:34:20 PM EST
One more thing... I have a 20" crowned barrel, would I have any trouble threading it or putting a F/S on it?

Link Posted: 9/15/2004 7:42:02 AM EST
[Last Edit: 9/15/2004 7:47:02 AM EST by BFIBri]
I'm going to get it done today... You think there would be problem threading a post ban barrel?

What it the diameter of a pre ban threaded barrel vs a post ban crowned, looks like the post ban has a wider diameter. Whould the barrel have to be cut down?

Link Posted: 9/15/2004 8:02:23 AM EST
Are you doing it yourself, or taking it to a smith?
Link Posted: 9/15/2004 8:26:37 AM EST
Taking it to a gunsmith. He going to charge me $65, does that sound fair?

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