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Issues sighting in AR556

This is a discussion on Issues sighting in AR556 within the Ruger Semi-Auto forums, part of the Rifle & Shotgun Forum category; New to AR carbines, not new to Ruger. My first rifle when I was 10 was a 10/22. At 18 a mini14. Have nothing but ...


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Old March 13th, 2017, 09:13 AM   #1
 
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Issues sighting in AR556

New to AR carbines, not new to Ruger. My first rifle when I was 10 was a 10/22. At 18 a mini14. Have nothing but wonderful things to say about Ruger Products and their customer support.

As my user name suggests I fled upstate NY and moved to tropical America (Florida)

So I have a severe issue with the rifle. Went to Okeechobee (big outdoor range its awesome) to sight it in.

I have an old Colt A1 replica. The rear sight is the carry handle and has a dial to adjust for elevation and a dial for windage and front post allows for adjustment for elevation.

At 50 yards resting the fore grip on the range provided rest, I cant get this thing on paper. At 100 yards I can get maybe 2 out of 30 (yes you read that correctly) rounds on a human sized target aiming at the head and strike the knees.
The colt I can put 3-4 inch groups at 100 yards standing. Bench half inch groups all day.

Ammo-Federal XM193 55 grain. I literally went through all 420 rounds yesterday and have maybe, 20 hits on paper...
To get center mass and surprisingly 1 shot in the left eye of the ISIS target, I left the rear sight post down.

I am new to carbine ARs with flip sights. I have adjusted windage counting clicks all the way left, all the way right divide by 2 for zero. I have adjusted the front sight post
Foregrip resting on the bench rest the range provides.

Magazine clear of the table.
I cant hit the broad side of a barn with this thing. No obvious signs of damage from shipping to the front sight vase and gas block. There is no happy medium with this gun.
If I aim at a 6ft tall human form target for the forehead I'm hitting dirt 3 feet below the target. Adjust the post down I'm hitting shins and knees. Whether at 50 or 100 yards.
Now with the colt I can adjust front and rear elevation. Rugers flip sight just windage. No wind yesterday to speak of.

I stopped at an indoor range for the heck of it. At 70 feet playing with the sights and resting the foregrip on a bench rest, magazine clear of the table, I shot another 120 rounds of federal XM193 through it. Maybe 5 rounds hit the cardboard 3 feet below a standard splattering target. Or shot way high. Not 1 not a single round hit the target. I am at a loss.
Anyone else have one that shoots extremely low?
Im tempted to place a scope on it and see if any change. Or a bore sight in the chamber and see where point of impact shows up.



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Old March 13th, 2017, 09:25 AM   #2
 
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Bore sight it. Unpin your lower, point the gun at something, look the bore, and then adjust your sights to match what your bore is aimed at.
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Old March 13th, 2017, 10:24 AM   #3
 
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I want to say it shot a little low out of the box and it was off center, don't remember if it was right or left, but it was easily corrected.

I was going to suggest putting a couple hundred rounds through it and see if it changes, but I feel you have put enough rounds down the tube, any more probably isn't going to help.

I'd call Ruger and talk to C/S, I've never owned a Ruger that wouldn't shoot with a little tweaking.

The AR 556 is a nice gun for the price and shoots great but my 43 year old Colt will run rings around it when I stretch it out to 400 yds and beyond.


I would call them because it should shoot better than what you have described.


Good luck




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Last edited by Mark204; March 13th, 2017 at 12:32 PM.
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Old March 13th, 2017, 10:40 AM   #4
 
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I cant suggest anything on your Ruger AR556 unless I was there shooting with you, but did want to say welcome to FL. I also escaped from NY to come here to the hot and sunny tropics of FL, but that was back in 1990.

Okeechobee is also my outdoor range of choice here in South FL, its only about an hour drive from here in Palm Beach County and the RO George is really cool.
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Old March 13th, 2017, 11:01 AM   #5
 
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Start at 25 yards. IF your not on the target, try 5 yards. You have to get a starting point. 50 Yards is too far if the sights are way off, and since you've been adjusting the sights wildly, its now way off.

Adjusting the front sight way DOWN will cause the rifle to shoot higher. If your windage adjustment is ok(left-right) then all you need is elevation. Get one set first, then work on the other. My front sight was gunked up with the coating they put on the barrel... phosphate? I had to soak the retaining pin with penetrating oil, then get it freed up, before I could make any elevation adjustments. After that, there is a lot of adjustment range. I cant believe with a bit of care, you cant get the elevation dialed in.

Taking a drill bit, turning by hand(no drill) and opening up the rear aperture really helped me a lot. The rear aperture was so small that the sight picture looked distorted to me.

I've never been able to get a rifle to shoot well by letting the forearm just lay on a rest. I have to control the muzzle rise. I hold the forearm tightly, and press it solidly into the rest(bag).

The Ruger AR556 is a very accurate rifle, however, mine had a terrible trigger. If your jerking the trigger because you have one like mine did, getting your rifle sighted in will be frustrating. Settle down, take a shot, trying as carefully as possible to pull the trigger cleanly. Learn breathing and trigger control. You will start getting tight groups. They may be off by several feet, but that's what you need. Tight groups. Then dial it in.
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Old March 13th, 2017, 01:50 PM   #6
 
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Quote:
Originally Posted by weblance View Post
Start at 25 yards. IF your not on the target, try 5 yards. You have to get a starting point. 50 Yards is too far if the sights are way off, and since you've been adjusting the sights wildly, its now way off.

Adjusting the front sight way DOWN will cause the rifle to shoot higher. If your windage adjustment is ok(left-right) then all you need is elevation. Get one set first, then work on the other. My front sight was gunked up with the coating they put on the barrel... phosphate? I had to soak the retaining pin with penetrating oil, then get it freed up, before I could make any elevation adjustments. After that, there is a lot of adjustment range. I cant believe with a bit of care, you cant get the elevation dialed in.

Taking a drill bit, turning by hand(no drill) and opening up the rear aperture really helped me a lot. The rear aperture was so small that the sight picture looked distorted to me.

I've never been able to get a rifle to shoot well by letting the forearm just lay on a rest. I have to control the muzzle rise. I hold the forearm tightly, and press it solidly into the rest(bag).

The Ruger AR556 is a very accurate rifle, however, mine had a terrible trigger. If your jerking the trigger because you have one like mine did, getting your rifle sighted in will be frustrating. Settle down, take a shot, trying as carefully as possible to pull the trigger cleanly. Learn breathing and trigger control. You will start getting tight groups. They may be off by several feet, but that's what you need. Tight groups. Then dial it in.
The trigger (I believe) can be ruled out. The trigger on mine is beautiful. Leaps and bounds better than the new colt LE and S&W M&P15 carbines. The grip could be just a hair thicker. And boy is the trigger consistent! Clean break not alot of slop(take up) comparable to a trigger job done on a Glock.

Breathing wasn't ever an issue, I had it firm against my shoulder.
I think I'm going to get a laser to go in the chamber and see what is going on. What I dont get, why there is no happy medium. 420 rounds varrying 50-100 yards and cant get on paper until the rear sight is folded down... I'm thinking if elevation was adjusted in the rear perhaps, or if the upper is tweaked... Causing the rear post to sit at an awful angle...

Looked at the flash hider to see if perhaps that may be striking bullets, no signs of scoring... Have had that happen when I changed the flash hider on my SKS. But the bullets keyholed the paper when it did get on paper. Machining defect and the manufacturer sent me a new one.

Then at 75 feet indoors ruling out wind, humidity, and can't even get on paper...

I'm no expert. But I'll gladly take the Mini 14 over this for it was accurate right out of the box. If the laser in the chamber shows a big difference in point of theoretical impact vs sight picture and adjusting elevation doesnt change a thing then I guess I'll send it back... I'm not disappointed by any means with it. Sometimes you get a great product, rarely you get a lemon.
What makes me feel better, I didn't drop 1200+ compared to other carbines.
The mini14 had a cycling issue once that a total strip down cleaning and inspection didnt reveal anything obvious so I had sent that back to Ruger. Was a piston issue. They repaired it and installed a new barrel as it was a factory upgrade. I didn't even ask for it.

Try dealing with Colt for a cycle issue with a 1911... Cant possibly be our gun or magazines... It's the ammo! Stove pipes or wont eject-Ammo. Thats ok. Ruger or Kimber may replace the Colt.
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Old March 13th, 2017, 02:13 PM   #7
 
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Quote:
Originally Posted by ditto1958 View Post
Bore sight it. Unpin your lower, point the gun at something, look the bore, and then adjust your sights to match what your bore is aimed at.
Definitely going to give that a shot I've never in all the years I have been shooting, ever had a rifle shoot this terrible. I want to say its me for never playing with a carbine AR... (like comparing a geo metro to a Cadillac Deville going from the rifle length colt to a carbine) or with flip up rear sights.
Only "carbine" I've ever had was the Mini 14 which isn't close to this.

I will say this...
1. The trigger is perfect.
2. $750 out the door vs 800/900 for a Springfield Saint Colt LE or Bushmaster
3. Cycles perfectly
4. Upper and lower match unlike the cheaper DPMS and bushmaster that you can see day light through.
5. Rugers warranty.
6. Range of ammo it can shoot (though I'll stick to XM193 for price)
7. Delta ring that unscrews.
8. Unique milling on the front sight post
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Old March 13th, 2017, 03:01 PM   #8
 
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If you are shooting low I am not surprised. I had to take my front post down 9 clicks from mechanical zero.
I compared the Ruger flip up rear sight with a Magpul flip up site, and the Ruger is quite a bit shorter. The Magpul flip up seems to measure the same height as a standard military sight.
Ruger did great by putting an F height front sight on, but screwed the pooch by putting a lower than standard rear sight on.
I did get mine to zero just fine with the stock sights, but again, I went down 9 clicks (2 1/4 turns) on the front post, before it was perfect.
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Old March 13th, 2017, 03:30 PM   #9
 
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Just got home took the front sight completely out. 2 flakes of coating beneath the post not allowing it to move down all of the way. Threads are not damaged woohoo!

I should have checked that first. Doh!
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Old March 13th, 2017, 03:38 PM   #10
 
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Originally Posted by AR GRIFF View Post
If you are shooting low I am not surprised. I had to take my front post down 9 clicks from mechanical zero.
I compared the Ruger flip up rear sight with a Magpul flip up site, and the Ruger is quite a bit shorter. The Magpul flip up seems to measure the same height as a standard military sight.
Ruger did great by putting an F height front sight on, but screwed the pooch by putting a lower than standard rear sight on.
I did get mine to zero just fine with the stock sights, but again, I went down 9 clicks (2 1/4 turns) on the front post, before it was perfect.
Would not go more than 3 clicks down from where it was set at the factory and thats when I could get shin shots aiming for the head... Found flakes of the coating in the post housing which jammed the post from turning down. Threads aren't damaged thankfully.

Here I was thinking I'm either really missing something or have a defective weapon...

Hopefully this solves it.
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Old March 13th, 2017, 03:56 PM   #11
 
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One other thing to check. It shouldn't be so but is the barrel nut tight? Had a guy at the range struggling one day, checked the gun and the barrel nut was loose.

Probably not your issue but something to check.
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Old March 13th, 2017, 04:07 PM   #12
 
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Quote:
Originally Posted by FUACny2FL View Post
Would not go more than 3 clicks down from where it was set at the factory and thats when I could get shin shots aiming for the head... Found flakes of the coating in the post housing which jammed the post from turning down. Threads aren't damaged thankfully.

Here I was thinking I'm either really missing something or have a defective weapon...

Hopefully this solves it.
Glad to hear!
Like I said I mounted a Magpul and the Ruger site on my 556 at the same time just to compare height, for some reason Ruger really made the rear site short. Now that you can adjust the front post, I bet you will be good to go!
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