how to zero in an AR [Archive] - Glock Talk

PDA

View Full Version : how to zero in an AR


catalyst686
06-08-2011, 11:14
I currently have a set of magpul flip up sights on my AR and am looking for tips on getting the rifle "zeroed in". I found this video which I think will be helpful. http://www.youtube.com/watch?v=j5QCGWYfHWk
If anyone has any tips or tricks with zeroing in a rifle with magpul sights I'd appreciate your help.
:cool:

boomhower
06-08-2011, 11:30
No real trick to it. Go the the 25 yard range and get it centered on paper but don't need to be perfect. Then go to the 50 or 100 yard range and zero there. I prefer three round groups for zeroing.

Captains1911
06-08-2011, 12:11
Nothing special, just decide which zero you want, I prefer a 50yd/200m, then go to the closer of the two distances, shoot 5-10rd groups, adjust the sights as needed, and repeat until zeroed. Then, if you can, check the zero at the longer distance and make any necessary adjustments.

For AR irons, you adjust the front sight post for elevation, and the rear aperature for windage.

RyanNREMTP
06-08-2011, 14:59
Just don't over torque the screw on the sights or you'll be sending them back to Magpul like I had to.

micdude
06-08-2011, 21:36
Just don't over torque the screw on the sights or you'll be sending them back to Magpul like I had to.

What happen?

Captains1911
06-09-2011, 06:44
What happen?

Over tightening a steel crew on a polymer part, use your imagination.

FatBoy
06-09-2011, 10:01
Put gun on a bench/sandbags, set up target at 25y. Shoot a few rounds(3), check, adjust, repeat. Move target further away repeat again. When you get to your final distance, shoot a couple of 5-10rd groups. I happen to also like the "50/200y" zero. It ends up being more like 220y in my gun/ammo combo. Either way, bullet path is only about 2" off from zero to about 250y.

FB

surf
06-09-2011, 11:09
Put gun on a bench/sandbags, set up target at 25y. Shoot a few rounds(3), check, adjust, repeat. Move target further away repeat again. When you get to your final distance, shoot a couple of 5-10rd groups. I happen to also like the "50/200y" zero. It ends up being more like 220y in my gun/ammo combo. Either way, bullet path is only about 2" off from zero to about 250y.

FBAs Captains1911 mentions above it is a 50 yard / 200 meter zero which is why your combo is almost 220 yards as 200 meters is almost 219 yards. :)

RyanNREMTP
06-09-2011, 14:19
Over tightening a steel crew on a polymer part, use your imagination.

Pretty much it will crack the groove that goes over the rail. On mine the crack wasn't very bad but even that much tilted the sight about 10 degrees.

I have to say that the CS at Magpul was great. I sent them an email just describing what happened and I got a reply back in less than an hour. I sent the sight back to them and just waiting for it to be shipped back. They said the newer Magpul sights have a bar in them to prevent over tightening.

Ferdinandd
06-10-2011, 19:38
Great info and very timely for me. I was looking for info on how to zero my new Spike's AR.

Rebel_James
06-12-2011, 19:43
I was taught in Patrol Rifle School that the 50 yard zero is best if you're a Peace Officer.

Here's the zero chart:

http://www.jesseshunting.com/photopost/data/500/medium/Zerobulletpaths.jpg



Also you might consider the Matech BUIS which is issued to our military. It's made of steel and works great.

http://shop.ebay.com/i.html?_from=R40&_trksid=p5197.m570.l1313&_nkw=matech+sight&_sacat=See-All-Categories