[ARCHIVED THREAD] - Front sight cant?

Posted: 9/26/2011 5:49:30 PM EDT

I bought a FNMI barrel from a member here and installed it on my gun, i know these .gov barrels have a bit of cant that is usually taken out when the barrel is tightened, this barrel took 70 Ft lbs to align correctly, and It still has a little bit of FSB cant, the rear sight is moved to the right but i believe it is still between the center mark, and the first large mark on the rear sight. I was wondering if this was acceptible, i hear that as long as its under 20 clicks from the center it is still in spec?

Posted: 9/26/2011 7:13:25 PM EDT

[#1]

Just trying to gather data.
Did you use a receiver or barrel block on the install?

Posted: 9/26/2011 7:42:21 PM EDT

[#2]

Quoted:
Just trying to gather data.
Did you use a receiver or barrel block on the install?

Receiver block.

Posted: 9/27/2011 4:07:08 AM EDT

[#3]

Have you tried to zero the sights yet to determine if the fsb is truly canted? This is usually due to an over-torqued barrel nut.

Posted: 9/27/2011 6:05:11 AM EDT

[#4]

Was this a new barrel nut or one that came with the barrel? If it was used, I personally, would replace the barrel nut and try again.

Posted: 9/27/2011 6:20:57 AM EDT

[#5]

Looking down the barrel, from breech to muzzle, does the barrel alignment pin actually line up with the FSB?

Posted: 9/27/2011 8:27:21 AM EDT

[#6]

Quoted:
Have you tried to zero the sights yet to determine if the fsb is truly canted? This is usually due to an over-torqued barrel nut.

70 ft lbs was where the barrel nut lined up with the hole in the receiver.

Posted: 9/27/2011 8:46:17 AM EDT

[#7]

You could try re torquing the barrel and have someone with a padded pipe wrench apply a little anti cant direction pressure on the sight tower.

[ARCHIVED THREAD] - Front sight cant?

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[ARCHIVED THREAD] - Front sight cant?

[ARCHIVED THREAD] - Front sight cant?