AR Feed Problem...

BeerBaitnAmmo

BeerBaitnAmmo

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Hey all, having problems with one particular mag not feeding in my AR. The bullet tips are getting caught on a sharp edge on the feed ramps between the barrel and the upper. I will try to attach a photo. Any ideas on how to fix this issue? Im not sure why only one type of mag is causing problems, I assume because it feeds the round in slightly lower than the rest. My only idea is to grind the barrel feel ramps down to match the upper, but I wanted to get some other opinions before I do anything like that. THanks!

BBA

https://photos.google.com/search/_tra_/photo/AF1QipMlWkU36dV2XZEnsTlQtvpwWfFZQaBKnVIk1b01
 
What kind of mag? Does it have the anti tilt follower?
What kind of AR?
Are all your other mags the same type and brand?
If all the other mags fit and work and just one doesn't, then I suggest you mark it and not use it for this particular AR. Don't mess with the gun itself.
 
I can't seem to access the link but could this be a Rifle vs M4 feed ramp issue?

See this pic for what I mean:
feedrampsID_zps5b0e16c6.jpg


Not sure why it only seems to be affecting one mag though...
 
That is exactly the problem. Rifle Extension, M4 receiver. My ATRS mage feed the bullet nose right into that edge in the pciture you posted above between the extension and reciever where as all my other mags feed higher. How can I fix that? The BAD picture you posted above....

Ok after some googling it looks like my options are replace the barrel, the upper, or dremel the tip of the rifle extension to make it flush with the receiver. What do you guys think?
 
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Could you not just buy an M4 extension, and take the barrel into a smith and have them turn the old extension off and re-torque an M4 extension on? Seems like the most proper and cost efficient way to do this.
 
FoxAlpha said:
Could you not just buy an M4 extension, and take the barrel into a smith and have them turn the old extension off and re-torque an M4 extension on? Seems like the most proper and cost efficient way to do this.
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They would have to reindex the pin to the gas block = more work. Cheaper to just ditch a $30. mag.
 
Sell the barrel and buy a barrel with the correct m4 extension/feed ramps.

Swapping barrels is easy, if you live anywhere near me in Alberta I'll do it for you for free. I bought all the tools a while ago as I prefer to build them instead of buying complete uppers and lowers.

Good luck
 
Chances are its a mag. My M4 style doesn't like a couple of plastic mags I have, all the metal ones work fine. Change the mag and see what happens. Preferably borrow one till you can find out what is going on. Every feed problem I have ever had has been mag related. Ignore dumba--es who say rebuild or replace the gun. Sheesh ask for help and get crapped on, great way to go guys.
 
grinder08 said:
Chances are its a mag. My M4 style doesn't like a couple of plastic mags I have, all the metal ones work fine. Change the mag and see what happens. Preferably borrow one till you can find out what is going on. Every feed problem I have ever had has been mag related. Ignore dumba--es who say rebuild or replace the gun. Sheesh ask for help and get crapped on, great way to go guys.
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Maybe you're reading something I'm not. Nobody crapped on the OP. All the posts above seem to be offering suggestions. The OP has a barrel with a rifle extension in an upper with M4 feed ramps which is known to have reliable feeding issues. Is your AR the same barrel/upper combo as the OP?
 
Trinimon said:
Maybe you're reading something I'm not. Nobody crapped on the OP. All the posts above seem to be offering suggestions. The OP has a barrel with a rifle extension in an upper with M4 feed ramps which is known to have reliable feeding issues. Is your AR the same barrel/upper combo as the OP?
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My concern was that jumping straight to a rebuild when the OP was only having trouble with one mag is a bit over the top. Try the simple solutions first, most of the time it will be right. Worst case it doesn't work and then you move on to more drastic measures. Don't throw the baby out with the bathwater.
 
grinder08 said:
My concern was that jumping straight to a rebuild when the OP was only having trouble with one mag is a bit over the top. Try the simple solutions first, most of the time it will be right. Worst case it doesn't work and then you move on to more drastic measures. Don't throw the baby out with the bathwater.
Click to expand...

Your suggestion is pretty much the same as mine. If all the other mags run 100%, ditch the bad mag. Cheapest solution. Although if the OP ever bought new mags that gave problems, the hardware swapping would be the ideal solution.
 
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