Need help with ar15 bcg problem

If you have to mortar it, it's an ammo/chamber problem. Like others have said, get a box or two or reputable name brand brass cased ammo and try it for function.

If you are still having the same issues, your chamber is undersized and the gun either needs to returned or have the chamber reamed.
 
yeah this is (90% sure) ammo related

you don't have to use 556

just don't shoot garbage ammo

personally ive seen way too many instances like this even pistol ammo not chambering for the same reason

I stay away from reloaded remanufactured whatever you can call ammos
 
faizi said:
Lantac gives life time warranty on its ebcg. So, I don't care to lube it.
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Fair enough, it's your rifle so just like I said to the guy who uses wheel bearing grease, lube or don't lube it however you like but please don't be that guy that sells his worn out crap on the EE without telling the new owner that you've abused your stuff it's entire lifetime and that it's pretty much now a parts gun.
I really don't understand people like you who will ruin a perfectly good firearm for no other reason but to save $10 a year on a bottle of oil. Do you also throw your gun in the dirt and get it all scratched up then take pics of it like that to make it look like you're a real operator?
I'll skip the dad rant on having respect for your things even though it's apparent your dad skipped that lesson during your upbringing.
Do what you want with your stuff, I hope it fails you when you actually need it during a match or while showing off to your friends at the range.

Now, back to our regularly scheduled program.
Looking forward to the range report with different ammo :)

:cheers:
 
cr5 said:
I wouldn't use grease in your AR, you should be using oil and keeping a nice thin film on the BCG, you will probably have issues if you shoot in colder temps using grease.
If it's been working well so far I'd say you've just been lucky.
I'm not telling you not to use grease, it's your rifle and you're free to do whatever you want with it.
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Nothing wrong with using grease just use one with a broad temperature range, I prefer Slip2000 grease. Oil drips burns or blows off parts, grease stays where you put it.
 
Kidd X said:
Nothing wrong with using grease just use one with a broad temperature range, I prefer Slip2000 grease. Oil drips burns or blows off parts, grease stays where you put it.
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Agreed but the increased viscosity can slow down the BCG and as it loads up with fouling or in cooler temps can cause stoppages. There is plenty of info out there outlining the appropriate lubricants and how to apply them to a semi automatic rifle. Do they use oil or grease in the military to lube the BCG? The answer to that will tell you what the best lubricant is for reliable function of the platform.
Just like the guys that run diesel motor oil in their gas car, it may not seize the motor but it isn't optimum and the lubricant is not really suitable to the application. As an example a diesel motor oil is designed for a low RPM motor that has a lot of soot fouling and it has additives to keep the soot in suspension which a high revving gasoline engine does not need. That is why oil manufacturers make two different types of oil for the two different types of motors. Not all lubricants are created equal and every mechanical device is designed with certain lubrication requirements. On a hot summer day using grease probably won't cause any problems but it still isn't what the engineers designed the firearm to be lubricated with and since a $10 bottle of gun oil will last a long time I don't bother looking for cheaper alternatives.

Do whatever you want but educate yourself before using something other than what the manufacturer recommends. The cost of the lubricant should not be a factor in your decision though, in the big picture it will cost you less than the cost of 20 rounds of ammunition to lubricate your firearms correctly for a year.
 
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The military also teaches to use the forward assist which we all know is a useless control. They also teach the SPORTS acronym which is outdated and ineffective. CLP is a garbage product that won big contracts on price factor. Slip2000 oils and grease products are specifically designed for rifles and machine guns and have very low operating temps that have been tested. The member using wheel bearing grease will likely be fine, I too have used the red tacky wheel grease and at well below freezing temps without issue. Temperature aside grease remains in place far better and for far longer than any oil.
 
####, I use wheel bearing grease and Russian steel-cased ammo in a NEA with a Norinco barrel. Also, with a home made GrinderMod™ lightweight bolt carrier.

It runs like a sewing machine.

Lubrication isn't rocket science.
 
Stevo said:
####, I use wheel bearing grease and Russian steel-cased ammo in a NEA with a Norinco barrel. Also, with a home made GrinderMod™ lightweight bolt carrier.

It runs like a sewing machine.

Lubrication isn't rocket science.
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Lol, with that combination of parts, ammo, and lube you must be able to shoot into space :p
There actually is quite a science to proper lubrication, in our rifles it's a little less critical but try to run Caterpiller diesel engine oil in a race car on a track and see how long the engine lasts. We get away with a lot because we don't push our guns, we clean them more often than they really need and running semi auto only takes a lot of the heat and stress out of the equation.

Kidd X said:
The military also teaches to use the forward assist which we all know is a useless control. They also teach the SPORTS acronym which is outdated and ineffective. CLP is a garbage product that won big contracts on price factor. Slip2000 oils and grease products are specifically designed for rifles and machine guns and have very low operating temps that have been tested. The member using wheel bearing grease will likely be fine, I too have used the red tacky wheel grease and at well below freezing temps without issue. Temperature aside grease remains in place far better and for far longer than any oil.
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I've never tried grease in an AR but when I ran a synthetic (gun store purchased) grease in my first Kriss Vector it would jam up in the winter but if I ran oil it was 100% reliable.
I do run grease in my M-305's in certain areas but only because it's what is supposed to be there.
I'm not saying it won't work, what I'm saying is that for the amount you need and the price of it a person should use what is recommended by the manufacturer instead of trying to save $3.
 
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Daver_II said:
The forward assist is useless?

Funny, I use it often.
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For what? I've never used it, either. If a round has problems getting chambered there's probably something else in there and forcing it by using the forward assist isn't really good, and I say that as someone that has AR-15s and who uses a C7 at work that ends up having his rifle in all kinds of situations.

It was added and adopted by US forces because of one of their branches specifically and it mysteriously still exists today. It should have been deleted from the design a long time ago.
 
I did the C1-C7 conversion in 1990 and have 100000s of rounds down range between work and play. I use mine every time I start a stage as I ALWAYS press-check... You certainly don't want it out of battery after you do.
 
Phat Eagle said:
I did the C1-C7 conversion in 1990 and have 100000s of rounds down range between work and play. I use mine every time I start a stage as I ALWAYS press-check... You certainly don't want it out of battery after you do.
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Bingo.... The Press Check.

Cant guarantee without it.... and the forward assist is critical to ensure 100% lockup.


Well you can always unseat your mag to check feed pattern... but then you run the risk of not fully re-seating it.
 
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