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Thread: More powerful buffer spring?

  1. #1
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    More powerful buffer spring?

    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?
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  2. #2
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    I just ordered a springco red spring. Hope that does it.
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    Boy you sure couldn't wait for a response

    Who did you order it from?

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    .

    Just wondering...how is everything lubed?

    .

  5. #5
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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.

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    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?



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  7. #7
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    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.
    Last edited by Eric D.; 02-10-11 at 00:50.
    B.A.S. Mechanical Engineering Technology

  8. #8
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    I am using a Springco spring currently in my SBR. But, it also worked with a standard one as well.

    Quote Originally Posted by Eric D. View Post
    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.



    Owner/Instructor at Semper Paratus Arms

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    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

  9. #9
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    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
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  10. #10
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    Quote Originally Posted by Iraqgunz View Post
    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?
    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)?
    Last edited by Grumpy MSG; 02-10-11 at 10:00.

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