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Posted: 1/29/2011 6:05:08 PM EDT
What is the easiest way to make sure the front site gas block combo are square with the rear sight. I want to keep my rear site in the center of adjustment.
Link Posted: 1/29/2011 6:22:41 PM EDT
Trial and error.

Line it up as best you can. Set up a target at 25yds and shoot. Rotate the front sight base as needed. When happy back up to 100yds and shoot again. You will probably have to slightly rotate it some more. Most likely you will not get it perfectly but you should get it to within a couple of clicks of the backsite. When happy with it remove one screw at a time and locktite them down. I then added a dab of paint to each screw head and the base for quick id if they start to loosen up.
Link Posted: 1/29/2011 6:23:40 PM EDT
a jig specifically for that purpose.

But since i assume you don't have one of those and don't want to spend the money on one for 1 build... just use a couple of levels... straight edges... eyeballing and double checking. Thats really all you can do.
Link Posted: 1/29/2011 6:33:31 PM EDT
Originally Posted By Bumblebee_Bob:
Trial and error.

Line it up as best you can. Set up a target at 25yds and shoot. Rotate the front sight base as needed. When happy back up to 100yds and shoot again. You will probably have to slightly rotate it some more. Most likely you will not get it perfectly but you should get it to within a couple of clicks of the backsite. When happy with it remove one screw at a time and locktite them down. I then added a dab of paint to each screw head and the base for quick id if they start to loosen up.


Yep!
http://www.compasslake.com/adjusting_sights1.htm

Link Posted: 1/29/2011 6:52:47 PM EDT
[Last Edit: 1/29/2011 6:53:39 PM EDT by dogbutter99]
i normally use a red dot for this.

i have a red dot that's sighted in on another riflle.. and i put the red dot on the rifle that needs to have a front sight clamped.. and match the sight post vertically with the dot then bolt down the clamp.

then take it to a range and try it out. if you are off, you can use the rear windage or or distance relative to verticle red dot.. ..

Link Posted: 1/29/2011 9:09:53 PM EDT
I like to use a laser but hoping to find one of the straight edges most builders use... But I have found that a Bullet bore laser is the best thing I have used.... I also use it for setting up a scope then dial it in at the range....
Link Posted: 1/29/2011 9:17:15 PM EDT
Originally Posted By jdoming728:
I like to use a laser but hoping to find one of the straight edges most builders use... But I have found that a Bullet bore laser is the best thing I have used.... I also use it for setting up a scope then dial it in at the range....


What are these?
Link Posted: 1/29/2011 9:32:44 PM EDT
Originally Posted By 458winmag:
Originally Posted By jdoming728:
I like to use a laser but hoping to find one of the straight edges most builders use... But I have found that a Bullet bore laser is the best thing I have used.... I also use it for setting up a scope then dial it in at the range....


What are these?


it's a jig that has a screw where your front post goes in and ties up to the upper rail.. it's a good jig. but for a single AR builder.... tough to justify cost.. or build (i have seen some custom ones)


Link Posted: 1/29/2011 10:07:00 PM EDT
I'll stick to previous method
Link Posted: 1/30/2011 3:34:50 AM EDT
Originally Posted By Bumblebee_Bob:
Trial and error.

Line it up as best you can. Set up a target at 25yds and shoot. Rotate the front sight base as needed. When happy back up to 100yds and shoot again. You will probably have to slightly rotate it some more. Most likely you will not get it perfectly but you should get it to within a couple of clicks of the backsite. When happy with it remove one screw at a time and locktite them down. I then added a dab of paint to each screw head and the base for quick id if they start to loosen up.


this........

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