OK guys…
I shot my 10.5" Noveske the other day and it ran great until 200rds. Suppressed or unsuppressed the bolt was sluggish to return to battery and wouldnt fully seat a round. I had to use the foward assist many times. Im using a H buffer and the gun runs fine and is not over gassed. In fact, once I use the FA the round will seat and the gun will run through the entire mag.
Is there a recommended buffer spring out there thats a tad stronger than a carbine spring?
I just ordered a springco red spring. Hope that does it.
Boy you sure couldn’t wait for a response :haha:
Who did you order it from?
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Just wondering…how is everything lubed?
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I’d look at cleaning and lubrication first, then parts fit & function. With that said, I run a red Springco spring & H buffer in my 6933 upper. It seems to give the best results for my setup.
Something seems odd. When running suppressed the pressure is increased and I would think that it should run.
What type of BCG do you have? What ammo were you using? Are you sure that there are no leaks anywhere?
A quick side question, IG what’s your opinion on the “extra power” springs?
I have a bcm 16" carbine with an H3 buffer, bcm spring and it runs 100% (I’ve only been shooting PMC xtac 5.56 62 gr ammo) I’m just curious if I could do some tweaking by getting a stiffer spring and backing down to an H2 buffer.
I am using a Springco spring currently in my SBR. But, it also worked with a standard one as well.
No, the gun runs fine when its goin. Its when I 1st seat a fresh mag and hit the bolt release, the bolt doesnt have enough juice to fully chamber the round…after 200rds or so. Im guessing the carbon/crap after 200rds was just enough to slow the bolt down.
Its a Noveske 10.5" SBR with full auto bolt, H buffer, and standard carbine spring. Im guessing the sprinco red spring will do the trick. Ill just have to make sure it has enough gas unsuppressed to compress the spring.
*Ammo used was federal bulk pack at walmart
Educate me please on this one. Why would the supressor have an effect on the bolt carrier returning forward other than the increased pressure causing more carbon to end up in the bolt carrier and upper receiver? It seems to me (And this will be blasphemy to some on this site) the first step to sorting this out would be to clean the rifle and lubricate it properly.
The rifle is getting enough gas, it is cycling and grabbing the next round. Something is causing it not to chamber it completely. The question is: Is it tight tolerances, gunk (exacerbated by the supressor) or something misassembled( I have seen a Soldier assemble a rifle with the firing pin retaining pin backwards and smack the bolt carrier to bend it enough to get it together. It rubbed the upper receiver until it was corrected)?
lol, all good points grumpy.
The gun IS assembled correctly. I have a feeling it was a combination of sorts.
Noveske is known for a tight chamber, so add 200rds worth of gunk and a weak recoil spring and theres my problem. I bet the fact that it ran once I seated the round is because it was actually over gassed and the buffer was rebounding and slamming back onto the bolt which aided in stripping the next round off and chambering it fully.
I had a hunch what the problem was, I just wanted some ideas on a more powerful buffer spring that others had used. I posted this and 5min later did a google search and found springco…lol. :haha:
So hopefully that fixes it.
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I’ve never heard Noveske’s had tight chambers before.
Has anyone else?
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My 10.5" upper had some issues with the first round seating, but after 400 rounds down it now, no issues.
Ill know for sure here this month running 600 rounds in a one day carbine class.
What brand is the current spring and I would measure it.
What brand of mags and how many rounds are you loading? Have you tried starting out with say 2 less than full?
My only other guess is there is some point of friction when the BCG comes forward like on the top of the hammer.
I should also add in my experience the red spring increased recoil quite a bit. I tried it in a LaRue stealth 16" and I took it out after a couple mags is was so bad.
Ive also recently tried 2 of the blue springs, and had a much better experience although I noticed an slight increase in recoil from normal BCM/Colt springs.
Of course some people like them so Im not sure why I haven’t had the best luck with them. I normally use H buffers so that may play into it somewhat, too. I never had an issue with cycling or loading a fresh round off a new mag with regular BCM/Colt springs and H buffers.
No they are not.
Someone else already mentioned clean and lube. Though why you would need to do so after 200 rounds is beyond me.
I was referring to the fact that when you add a suppressor you create excess back pressure (unless I am wrong) and that should speed up the BCG.
I have cleaned my SBR a grand total of maybe 2 times and everything else was nothing more than a wipe down. I also run mine wet which is also “blasphemy” to some military people who have been wrongly indoctrinated.
As I stated earlier. My SBR was 100% reliable with the standard M4 spring.
Hey guys I’ve got a question relating to this for you. I had this same problem with some rounds that were poorly sized in my RRA. Since I switched to different ammo I’ve had no problems with feeding.
I plan on putting a Magpul UBR stock on it and it says in the manual to only use a carbine buffer & spring I believe, does anyone know why they say this? I was thinking about going to a heavier buffer to slow my bolt down a bit, should I not do this with the UBR stock?
Another problem I’ve been having is that my feed ramps gouge the crap out of my bullet jackets. If i chamber the same round twice I just throw it aside to be pulled because the jacket is so badly gouged. Has anyone heard of this before, is their an easy fix, like fileing an edge or do I need to buy & install a new feed ramp?
When they say “carbine” buffer they are referring to the size- in other words don’t use a rifle length buffer.
Take a picture of the inside of the upper. I suspect that you have a mismatched barrel extension and upper.
They most likely say that just to avoid any liability when their customers do dumb things.
The UBR uses standard carbine buffers and springs so it should be a direct swap. If you want to use an H buffer it should run fine and take a bit of the edge off the cycling.
Its common/normal with AR’s to have some scrapes on rounds that have been chambered. All of mine do it but its more just light scratches. If the rounds are really being gouged with deep scratches Id take a look at the feed ramps as its a possibility you have a bad edge there. See if the marks look the same if you feed the round from either the left or right side. Usually with a full magazine it will feed from the right. The next round down should feed from the left.