MY AR is Having ALOT of trouble! --HELP Please!--

[AKrazy4ARs]

There are a lot of things already posted that could be the issue at hand, but I suggest (as already suggested by a few people on the thread) you break out a camera and bust out a photo shoot for everybody here so we can check it out. You always want to start with the most obvious and simple things before jumping to some of the "larger" issues that could be causing the problem(s). Such as starting with a new magazine for example, but if its having problems feeding and you have shot it a good bit over the last 2 years, you might want to check the extractor that would be a good place to start for the feeding problem you are trying to describe. But it could be any number of things, and could be more then just one issue as well. Try to upload some pictures brother!

 

[Evenflo76]

Reassemble with new bolt hardware and function test. Don't fix less it's broke...

 

[Jeremy2171]

Look at getting the gas block/leakage problem fixed first... once you are getting a good gas supply THEN see if your feeding problems go away...

Remember the buffer is acting upon the force put on it by the bolt carrier moving...if the carrier isn't moving to full potential then the buffer cannot be either...

Sounds like your short stroke/cycling issues are from the gas block/bolt ring issues..soon as you get a good jet of gas to the carrier I imagine the other problem will go away.

 

[TimboKhan]

Okay then try running a brand new one dry for a while and see how long it runs

I ran mine in the USMC basically dry, and it worked just fine.

I have a couple thousand rounds down both of my Bushmasters basically dry, and again, they run just fine.

They aren't 100% dry, obviously, but if there is more than 2 drops of lube in either of my Bushmasters right now, I would be shocked.

Like I said, I disagree.

 

[MoDerN_WarRioR]

There are a lot of things already posted that could be the issue at hand, but I suggest (as already suggested by a few people on the thread) you break out a camera and bust out a photo shoot for everybody here so we can check it out. You always want to start with the most obvious and simple things before jumping to some of the "larger" issues that could be causing the problem(s). Such as starting with a new magazine for example, but if its having problems feeding and you have shot it a good bit over the last 2 years, you might want to check the extractor that would be a good place to start for the feeding problem you are trying to describe. But it could be any number of things, and could be more then just one issue as well. Try to upload some pictures brother!

AKrazy... Have you looked through the rest of the postings? I have probably a dozen or so pictures posted of pretty much all of the problem spots. And i have 5 AR mags that its happening too on all of them, and the extractor isnt malfunctioning. That has never been an issue. It could be a number of things and i most certainly think it is, but i have taken into consideration of everyone's suggestions and have worked it out to being a gas problem. I know for a fact i have problems there and i will fix those before i go throw another 15-20 bucks on another mag. But thanks Brother.

Thanks for all the Help Jeremy! Im going to be ordering a gas block hopefully within the day or 2 and im about to step out of the souse too see if my local gunsmith has any rings laying around! I agree too that this will solve ALOT of my problems, if not, it needed to be replaced anyways and the investigation will go on!

Thanks!
--Chris

 

[MoDerN_WarRioR]

Hey guys, How do i figure out what the diameter of my gas block needs to be? Im thinking its the standard .750 but im seeing so many different sizes. Is there a way i can find out? Its a stock DPMS Sportical with the stock block on it. I cannot find out online what the size is i need to get. ANY help would be great!

Thanks!!
--Chris

 

[ndh87]

clean the gun well, maybe replace the gas tube, make sure you have plenty of lube on the internals of the gun. having the feed ramps worked over might help as well

 

[MoDerN_WarRioR]

What do you mean having the feed ramps "worked over"? Just wondering.

Thanks!
--Chris

 

[Evenflo76]

Call DPMS... and don't touch your feed ramps

 

[Jeremy2171]

Get a set of calipers and measure your barrel at the gas port...it's probably .750. While you are at it measure the inside of your block and see what size it is..

Some blocks that you can get are a "clamp" style which allow you to get a tighter grip/seal on the barrel as well.

You could start looking here..

http://www.brownells.com/.aspx/cid=4558/Products/Gas_Blocks

 

[MoDerN_WarRioR]

Well I ordered a new YHM Clamp on single rail gas block today! And i decided to go with the "improved" single ring gas ring to repair my bolt! Im very excited to install these new parts and im praying this will take care of alot of my issues!

I will give a field report hopefully next weekend when i get it all put on! I will hopefully be receiving them on Tuesday the 27th and ill update on the status from there!

Thanks again for all the help!
--Chris

 

[Jeremy2171]

Do me a favor....replace the gas block first then shoot it with the "bad" rings. Then install the uni-ring and see what happens...

 

[MoDerN_WarRioR]

Well. Can it technically run with just 2 of the rings in it? I didn't plan on shooting it with the bad ring so i took it out and threw it away. It has only 2 rings on it at the moment that i was planning on taking off when i got the uni ring in... so i will still shoot it with 2 if its totally safe. Or should i not even mess with it having only 2 rings installed?

Thanks!
--Chris

 

[Jeremy2171]

It won't hurt anything....providing everything else is tight you might be surprised when it works...

An AR with NO rings will move enough to extract an empty case but not pick up the next round.

 

[Quentin]

This has been an educational thread. Thanks Jeremy! Also great pictures and attention to detailed instructions, MoDerN_WarRioR. Definitely update this thread when you get the parts in.

 

[scndactive]

as we were shooting off excess ammo.

Sir, that is a bold face lie. There is no such thing.

 

[MoDerN_WarRioR]

Thanks for all the help Jeremy! I have a much broader understanding of everything that im dealing with! I will surely post up how well it shoots (or doesn't) hopefully this weekend! I have been talking to a local Tactical firearms gunsmith that works on alot of the Police Depts Rifles and some SWAT rifles... and he let me know if what ever i do doesn't work and all else fails, to bring it in and he would take care of me!

Thanks again for all the info! That goes for everyone who pitched in! Ill keep this thread updated!

--Chris

 

[savage23]

ar feed problem

Clean the inside of your gas tube!!!!!!!! Also reem the gas port in the barrel& the gas block. My bushy had the same problem& that took care of it!

 

[Bartholomew Roberts]

Also reem the gas port in the barrel& the gas block. My bushy had the same problem& that took care of it!

Well, we already know that his gas rings are bad since one is broken and the bolt failed the accepted test for gas ring wear. Maybe, just maybe, he should try fixing the issues he has already identified before he starts drilling on his barrel? Just a thought...

Becuase you see, if it turns out that the problem is a loose gas block combined with bad gas rings and he starts reeming out the gas ports, then when he does replace those parts, his rifle is going to have function issues from being overgassed and it will be difficult to correct.

I realize that it may have worked, at least temporarily, in your case; but reeming a gas port is typically one of those last resort type of repairs - and usually you at least try to measure the existing gas port first. Did you see something in particular here that made you think this should be the first thing he does?

 

[savage23]

ar feed problem

Yes the build up of carbon that you can see in the pic of his gas tube. Not the one on the bolt the long one.I didn't mean to enlarge the gas ports-just give them a good cleaning.It took me an hour or so to clean my gas tube-you wouldn't belive the junk that came out! As long as he has it off he might as well clean it.

 

[Bartholomew Roberts]

Ah, OK. Just out of curiousity, what were the main types of ammo you were shooting through the Bushy prior to your cleaning?

 

[savage23]

Mostly wolf-some federal brass-never had any problems until i shot some Tula. Must be really dirty ammo!

 

[CA2005]

The problem likely has to do with the fact it's an AR

(runs and hides now)

 

[savage23]

You are most likely right. Lord knows they are the only weapons that malfunction!!!!!!!

 

[Jeremy2171]

I don't clean gas tubes....I throw them away....of course in 20+ years I've never had to throw one away either....

Gas tubes are highly unlikely to foul to the point of not operating..as I stated before I put over 10,000 rounds through mine with no major issues....