If you cycle the action without any ammo with the charging handle do you feel like is getting stuck some where? Do you have another working AR? If so, how does it feel the strength of the springs in comparison?

me too, and in all honesty its probably not properly lubed. I used some cleaner lubricant to line the inside of the upper and the barrel but it was a light coat. Can that really cause a cycling problem though?

 

I had an issue cycling with my then new middy upper at a carbine class.  I lubed the shit out of it and it worked perfectly since. 

I think it can. Specially the first shots when all is recently put together. But this is only my guess...

i guess only way to test is to put everything back together, lube everything up good and shoot and pray for the best

If you cycle the action without any ammo with the charging handle do you feel like is getting stuck some where? Do you have another working AR? If so, how does it feel the strength of the springs in comparison?

 

no other working ar but just tried the charging handle and seems fine. Its a bit harder but then again I replaced the stock mil spec one with the rainier arms raptor so thats prob why

I would also check your ammo.  Have you tried any other ammo?
 

I built an AR for my brother in law.  We initially tried the PMC 223 stuff and the bolt would not lock back.  It would strip the rounds without issue.  We then tried PMC XTAC 556.  Same issue.  We then tried the Federal 556 and it functioned without issue.  We repeated the test multiple times without issue with the Federal stuff.

 

PMC are loaded light.  It's perfect when I want to do matches as there is minimal recoil and they function without issue on my own rifle.

 

I would also check your ammo.  Have you tried any other ammo?

 

I built an AR for my brother in law.  We initially tried the PMC 223 stuff and the bolt would not lock back.  It would strip the rounds without issue.  We then tried PMC XTAC 556.  Same issue.  We then tried the Federal 556 and it functioned without issue.  We repeated the test multiple times without issue with the Federal stuff.

 

PMC are loaded light.  It's perfect when I want to do matches as there is minimal recoil and they function without issue on my own rifle.

 

 

 

Well last night I lubed evertthing up and had vmastro87 help me out and took the upper out with him to the range with a magazine and some of the ammo I use. According to him it  fired without a hiccup. So now that narrows it down to either the lack of lubrication when I shot or an issue with my lower. I guess I'll test it this week with my lower and hope that it was just the lube. If not I'm assuming its gotta be the buffer as thats the only thing I changed. 

I think each gun is going to have it's quirks.  You'll need to find out what works for it.

 

The PMC stuff works well on my gun but not so much on my brother in laws.  I think his is just picky as it cycles fine with Federal stuff.  I just joke saying that it likes the expensive stuff.

I think each gun is going to have it's quirks.  You'll need to find out what works for it.

 

The PMC stuff works well on my gun but not so much on my brother in laws.  I think his is just picky as it cycles fine with Federal stuff.  I just joke saying that it likes the expensive stuff.

true, I actually tested it out myself as well yesterday and all is good! 60 rounds no hiccups. Vmastro87 has been great helping me out on this. Thanks everyone for their help as well

 

I think each gun is going to have it's quirks.  You'll need to find out what works for it.

 

The PMC stuff works well on my gun but not so much on my brother in laws.  I think his is just picky as it cycles fine with Federal stuff.  I just joke saying that it likes the expensive stuff.

 

 

People who say this also say most brands are just as good as overpriced Colts. And then say they like their AKs better because they are more reliable and they don't have to clean them. Even though they clean them.

 

Real ARs don't have quirks.

People who say this also say most brands are just as good as overpriced Colts. And then say they like their AKs better because they are more reliable and they don't have to clean them. Even though they clean them.

Real ARs don't have quirks.

This X100000000

 

This is why WECSOG armorers building guns that they claim are "just as good as..." with the flawed concept that "parts are parts" rears it's ugly head and bites some poor guy on the ass and saddles him with a "finicky" "quirky" "picky" gun that will only run on Tuesdays after a full moon with the right ammo and the unicorn tears for lube.

 

Nothing is as good as a gun built to the TDP except a gun built to the TDP.

The pmc bronze ammo is marginal in terms of gas.

 

An example chronoed the same day, same 16" midlength bcm barrel.

 

Federal xm193 average 3059 fps.

 

Wolf 55gr fmj averaged 2832 fps.

 

Pmc bronze averaged 2654 fps.

 

If your gun has any issues with the gas system that look like under gassing, pmc bronze will show it. It's about the same velocity as wolf 62gr.

Glad it seems to be solved, OP! Keep us posted... especially if you determine the actual culprit.

 

Side note: WECSOG (once I found out what it meant) is hilarious! I guess it applies to me, and I'm strangely okay with it.

  

 

People who say this also say most brands are just as good as overpriced Colts. And then say they like their AKs better because they are more reliable and they don't have to clean them. Even though they clean them.

 

Real ARs don't have quirks.

 

 

Of course not, because slow, low gas ammo won't work badly on a colt after it experiences gas port erosion. Especially in winter. 

 

Oh wait.. 

 

Marginal ammo is marginal. A marginal gun makes it worse. 

well turns out i still might have a gas issue... went to the range friday and same thing happened but not as bad as before. keep in mind I went to the range 3 times with about 175 rounds put through and didn't relube so maybe lube is still the issue but I doubt it. Fri it was shooting fine until about 20 rounds in and it started to short stroke again where the bolt wouldn't chamber the round all the way. Its not a clearance issue because when it happens I pull back the charging handle and let go and the bullet chambered half way chambers correctly. Only problems I can think of is #1 gas hole in the barrel isn't big enough causing restricted gas flow (doubt it but who knows), #2 the upper is still brand new and only has 175 rounds through it and needs to be broken in, #3 gas leak, #4 gun doesn't like the ammo (which i hope isn't the case since I want a gun to be able to handle anything)

 

btw: bought a niboron BCG to hopefully avoid the lube issue if it really is that sensitive to hopefully get a smoother cycle but I'm going from a ar15 semi bolt to a m16 bolt which is heavier. hopefully it would make matters worse. 

well turns out i still might have a gas issue... went to the range friday and same thing happened but not as bad as before. keep in mind I went to the range 3 times with about 175 rounds put through and didn't relube so maybe lube is still the issue but I doubt it. Fri it was shooting fine until about 20 rounds in and it started to short stroke again where the bolt wouldn't chamber the round all the way. Its not a clearance issue because when it happens I pull back the charging handle and let go and the bullet chambered half way chambers correctly. Only problems I can think of is #1 gas hole in the barrel isn't big enough causing restricted gas flow (doubt it but who knows), #2 the upper is still brand new and only has 175 rounds through it and needs to be broken in, #3 gas leak, #4 gun doesn't like the ammo (which i hope isn't the case since I want a gun to be able to handle anything)

 

btw: bought a niboron BCG to hopefully avoid the lube issue if it really is that sensitive to hopefully get a smoother cycle but I'm going from a ar15 semi bolt to a m16 bolt which is heavier. hopefully it would make matters worse. 

 

 

I shot again today and first shot jammed but then the next 3-4 mags went flawless. then occasional jam again. this time though the jam is from the empty casing still being in the chamber.  its not a lube problem as i just bought a niboron bcg and lubed that up. the one constant though was that the bolt doesn't lock back on the last shot which makes me think that maybe the bolt goes back just enough on most shots but has the occasional jam where it doesn't go back enough. that would explain why i can go through some mags without jamming. so without enough force bringing the bolt back what can it be? gas tube looks fine, gas block is tight. could it be a defective barrel in any way? 

What oil are you using?  And are you lubing everything enough?  This should give you a reference of how and where to oil http://www.weaponevolution.com/forum/showthread.php?1606-AR15-LUBE-POINTS

 

I run my BCG wet with Slip2000 ewl and never had even a hiccup with my Spikes 14.5" mid w/ T2 buffer using any ammo from tula to m855

What oil are you using?  And are you lubing everything enough?  This should give you a reference of how and where to oil http://www.weaponevolution.com/forum/showthread.php?1606-AR15-LUBE-POINTS

 

I run my BCG wet with Slip2000 ewl and never had even a hiccup with my Spikes 14.5" mid w/ T2 buffer using any ammo from tula to m855

 

mobile one, but my bcg is niboron so i doubt lube is the issue now

I dont have any experiance with coated BCGs but I still wouldnt run them without a good amout of lube, but thats just my .02.

 

Was it doing it before or after you change BCGs?  Or both?

I dont have any experiance with coated BCGs but I still wouldnt run them without a good amout of lube, but thats just my .02.

 

Was it doing it before or after you change BCGs?  Or both?

 

both, i highly doubt its the bcg

 

not sure if this is normal but there seems to be a lot of carbon build up around the gas tube by the gas block and around the roll pin area...

 

That looks like you are loosing pressure there... Try to install a new gas tube.

That looks like you are loosing pressure there... Try to install a new gas tube.

just ordered a new one... tubes only 3 months old and maybe 400 shots through it. can it really go bad that early?

just ordered a new one... tubes only 3 months old and maybe 400 shots through it. can it really go bad that early?

It should not... Maybe a defective one.

just ordered a new one... tubes only 3 months old and maybe 400 shots through it. can it really go bad that early?

 

No, but it can be out of spec form the get go. Or the gas block can be. 

 

I had issues with that with one gun before the panic buying. The barrel was slightly narrow at the gas block, the hole for the gas tube was slightly oversized. WAy more carbon build up around the barrel though than yours. I keep a spare gas tube in carbine, mid and rifle length around just in case. 

just decided to test the gas flow and blew compressed air into the gas tube from the upper side. air definitely was coming out of the connection between the gas tube and gas block. is that normal or is there an issue with either the seal of the gas tube or alignment of the gas block?

just decided to test the gas flow and blew compressed air into the gas tube from the upper side. air definitely was coming out of the connection between the gas tube and gas block. is that normal or is there an issue with either the seal of the gas tube or alignment of the gas block?

 

well its not gas tube... replaced it with a spikes melonite tube and still same issue. i just gave up and dropped it off at g&s hunters to try and figure out the issue. hopefully they can solve this