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New AR 556 problems

This is a discussion on New AR 556 problems within the Ruger Semi-Auto forums, part of the Rifle & Shotgun Forum category; This is my first AR so I'm definitely a noob. I pulled it out of the box when I got it, dry fired with no ...


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Old May 12th, 2017, 12:05 AM   #1
 
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New AR 556 problems

This is my first AR so I'm definitely a noob. I pulled it out of the box when I got it, dry fired with no mag in and the charge handle stuck; no pulling would suffice. Researched some which lead me to hitting the stock on the ground. It broke free but the first inch or so of the pull back was "tight" feeling. I dry fired again and same thing. I just tore it down to clean and lube it and it has the same issue still.

What could be causing this? I read that someone had this issue and ruger ended up replacing the firing pin.

I'm going to rip it apart again and see if their are any noticeable issues tomorrow. I didn't really look tonight; hoped it was a dirty and/or lube problem and it was my first time. What should I look for?



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Old May 12th, 2017, 03:54 AM   #2
 
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Is it hitting the top of your stock? Sometimes the charging handle can hot or rub the top of the stock. Especially when it's collapsed. When you pull the rear receiver pin out and it hinges forward does the bolt operate smoothly coming out?

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Old May 12th, 2017, 06:36 AM   #3
 
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First, dis-assemble and do a clean and lube. Get the factory "gunk" off of it. Then check the fit of the parts as you re-assemble. Watch for any issues or binding. There is a ton of good info on You Tube if you need help with the tear down.

Hope this helps,

G.
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Old May 12th, 2017, 06:44 AM   #4
 
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When you dry fire your rifle, you are dropping the hammer. Since the rifle isnt firing a cartridge, nothing recocks the hammer. It stays against the back of the bolt, in the fired position. When you draw the charging handle back, you are cocking the hammer in that first inch or so. Try this. After drawing the charging handle back, and noticing the stiff pull, DONT dry fire it, and draw the handle back again a couple times. Was it easier this time? Thats because the hammer stays cocked when you dont dry fire it.

The AR benefits from running wet. This means lubrication. Not dripping wet, but the 4 areas on the bolt need lube, and the face of the hammer also. Google AR lubrication.
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Old May 12th, 2017, 08:03 PM   #5
 
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My out-of-the-box AR 556 did similar as you have explained.

I took it apart and found the firing pin was sticking in the bolt. The firing pin looked a little rough compared to the hole in the bolt.

While I could have sent it to Ruger to repair it, I took some 2000 grit sandpaper and polished it ever so slightly. Put back together and no more sticking.

About 600 rounds and so far so good.
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Old May 13th, 2017, 05:30 PM   #6
 
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Alright I watched a video on proper bolt maintance. I tore it down, inspected and found nothing unusual. I put more lube on this time before reassembly. It does the same thing but I no longer have to hit the stock on the ground. Now a solid slap with my hand on the stock does the trick. It did function properly ONCE after this tear down but I can't get it to do it again.
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Old May 13th, 2017, 05:36 PM   #7
 
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I'll look at the firing pin and hole better when I have time. It did seem to slide easily but sometimes it seemed a little stuck, then slide easily again.
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Old May 13th, 2017, 07:23 PM   #8
 
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I assembled my dissipator AR from scratch using a Fail-Zero bolt in a bolt carrier that I can't think of right now. The coating on the bolt made it super tight in the carrier and against the locking lugs. It was as you describe, hard to charge by hand and had a hard time going into battery. Shooting it made the parts wear in against each other and now it's smooth with normal resistance upon charging and chambering.

My advice for the new AR556 is to clean out the factory grease and lube it with a proper gun oil. Make sure the gas rings have a drop or two of oil on them before insertion into the carrier.
Shoot the rifle and see how it runs. If it has trouble feeding or extracting, then call ruger. Chance are it just needs a small amount of break in.
Good luck!
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Old May 13th, 2017, 08:02 PM   #9
 
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I would recommend putting about 1,000 rounds through it and then try dry firing again. That should lossen get up a bit.
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Old May 13th, 2017, 08:40 PM   #10
 
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Welcome from New Jersey. Learn and enjoy. Try pulling the charging handle with the gun poinetd slightly down.
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Old May 14th, 2017, 12:03 AM   #11
 
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The charging rod won't move even a little, doesn't matter how hard you pull, until you hit the stock; this is after a dry fire. Firing pin might be sticky. Other wise everything works perfectly. Just to clarify.

I might try to put a few rounds through it Monday. Checking the firing pin tomorrow hopefully.
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Old May 14th, 2017, 04:12 PM   #12
 
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Just put 30 rounds through it with zero problems. Still has the dry fire issue.

Loving the gun!(besides this issue). Optics are deffinently my first purchase ?
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Old May 14th, 2017, 04:44 PM   #13
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Use a wet lubricant, 3n1, prizm, or break free clp. Coat the bolt, charging handle, and carrier. Run the gun wet and you should have no issues. Dry ar's malfunction in my experience. I suggest putting a couple hundred rounds through it. The bolt face and barrel extension will wear into each other, and the gun will become more loose.


There is a video of Larry Vickers running an ar that was submerged into a tub of 5w30 motor oil . Even though it was dripping with oil, ran just fine. Here is the video, although this is an exaggerated use of oil, I still recommend to run the bolt carrier assembly wet, thats how I run mine, and I own more than a few.

https://youtu.be/p9bOT_d60LM
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Old May 14th, 2017, 05:04 PM   #14
 
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I'm with MeagerHair. Take the doggone thing to the range with about 500 rounds of ammo and shoot it. It's not an egg, it's an AR.
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Old May 23rd, 2017, 05:59 PM   #15
 
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Took my brand new Ruger AR 556 back to the store where I bought it. I could not even drive the rear take down pin out. The gun shop were apologized and said it was much too tight. Upon close inspection, the upper and lower didn't match up right. This was a cerokoted version.
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