Favorite Adjustable Gas Block?

Discussion in 'AR Pattern Rifles' started by Tim, Aug 20, 2019.

  1. Tim

    Tim I am....an enchanter. Staff Member Benefactor Charter Life Member

    Joined:
    Dec 17, 2016
    Messages:
    5,077
    Likes Received:
    10,169
    Location:
    Hendersonville, NC
    - Use case is a suppressed 10.3" 5.56/.223 SBR

    - With the current setup, the fore end length and suppressor mount (SiCo Omega brake) can sometimes interfere with getting a 'straight shot' through the front for allen keys.

    So...what's your favorite adjustable gas block? .750". Easy to adjust, reliable, yada yada yada....

    I do NOT want to go with an adjustable bolt carrier.
     
  2. BigWaylon

    BigWaylon Head philatelist Staff Member Benefactor Charter Life Member

    Joined:
    Dec 18, 2016
    Messages:
    18,755
    Likes Received:
    60,416
    Location:
    Charlotte
    My 10.5” and 12” 5.56, and my 12 6.8, all have SLR Sentry 7 AGBs. They’ve worked well for me...but I’ve never used another brand.
     
  3. Ikarus1

    Ikarus1 Avtomat Krishna-kov

    Joined:
    Dec 16, 2016
    Messages:
    7,527
    Likes Received:
    11,256
    Location:
    East of CLT
    Superlative arms, by far. The detent (no setscrew) and bleed-off option makes it worth every penny. One of the things I ever did for my .308 ARs.
     
    Last edited: Aug 20, 2019
    Howland likes this.
  4. Tim

    Tim I am....an enchanter. Staff Member Benefactor Charter Life Member

    Joined:
    Dec 17, 2016
    Messages:
    5,077
    Likes Received:
    10,169
    Location:
    Hendersonville, NC

    This one? Have you used it with an SBR? I'm somewhat concerned about burning my fingers with the gas bleeding out of the block. BUT, as a lefty shooter, I really like the idea of that gas going somewhere other than my face.

    https://suparms.com/collections/adj...ow-pro-solid-gas-block-stainless-steel-finish
     
  5. NKD

    NKD Senior Member Benefactor Kimberless Supporting Member

    Joined:
    Dec 16, 2016
    Messages:
    5,341
    Likes Received:
    7,534
    Location:
    Chatham
    I've used SLR's extensively for my competition rifles. No matter what you do they will freeze. If you approach any kind of high round counts. Serious p.i.a. I can only imagine how much worse it would be with a can.
    The quality is good and the CS is great. But I won't buy anymore. Likely go with the SA next time.

    I use a Odin Works basic one on my 3gun rifle. I control the ammo, so its a set it/forget it one. It works great and you can fine tune it much more than a detent style. So it works great and does everything it needs to do.

    For a can it seems you need two setting easily changed. Like a switchblock.
     
  6. Tim

    Tim I am....an enchanter. Staff Member Benefactor Charter Life Member

    Joined:
    Dec 17, 2016
    Messages:
    5,077
    Likes Received:
    10,169
    Location:
    Hendersonville, NC

    $500!! :eek::eek::eek::eek::eek::eek::eek::eek::eek::eek:

    Might as well just buy a second (ok, 7th) rifle....
     
    Last edited: Aug 20, 2019
  7. NKD

    NKD Senior Member Benefactor Kimberless Supporting Member

    Joined:
    Dec 16, 2016
    Messages:
    5,341
    Likes Received:
    7,534
    Location:
    Chatham
  8. BigWaylon

    BigWaylon Head philatelist Staff Member Benefactor Charter Life Member

    Joined:
    Dec 18, 2016
    Messages:
    18,755
    Likes Received:
    60,416
    Location:
    Charlotte
    Mine (SLRs) are set for suppressed shooting. You have to manually cycle them if you remove the can.

    Shooting unsuppressed is simply barbaric and uncivilized. :D
     
    NKD likes this.
  9. NKD

    NKD Senior Member Benefactor Kimberless Supporting Member

    Joined:
    Dec 16, 2016
    Messages:
    5,341
    Likes Received:
    7,534
    Location:
    Chatham
    So every champion I ever met was a luddite!
     
  10. Ikarus1

    Ikarus1 Avtomat Krishna-kov

    Joined:
    Dec 16, 2016
    Messages:
    7,527
    Likes Received:
    11,256
    Location:
    East of CLT
  11. Ikarus1

    Ikarus1 Avtomat Krishna-kov

    Joined:
    Dec 16, 2016
    Messages:
    7,527
    Likes Received:
    11,256
    Location:
    East of CLT
    it has other settings than the bleed off. It will constrict the gas passage like every other gas block on the planet in the first couple of settings. And the gas vents forward......
     
  12. Tim

    Tim I am....an enchanter. Staff Member Benefactor Charter Life Member

    Joined:
    Dec 17, 2016
    Messages:
    5,077
    Likes Received:
    10,169
    Location:
    Hendersonville, NC

    With the carbine length gas, my grip is forward of the gas block.
     
  13. Zbizzle911

    Zbizzle911 Charter Freedom Lover Charter Member Supporting Member

    Joined:
    Dec 17, 2016
    Messages:
    2,776
    Likes Received:
    3,039
    Location:
    Midway Nc
    This. Love mine


    Sent from my iPhone using Tapatalk
     
    Ikarus1 likes this.
  14. Zbizzle911

    Zbizzle911 Charter Freedom Lover Charter Member Supporting Member

    Joined:
    Dec 17, 2016
    Messages:
    2,776
    Likes Received:
    3,039
    Location:
    Midway Nc
    I’ve got one on my 12.5” at and it’s fine. It gets hot if run hard but that’s the case with them all.


    Sent from my iPhone using Tapatalk
     
    Ikarus1 likes this.
  15. Tim

    Tim I am....an enchanter. Staff Member Benefactor Charter Life Member

    Joined:
    Dec 17, 2016
    Messages:
    5,077
    Likes Received:
    10,169
    Location:
    Hendersonville, NC
    In case anyone was interested, I found the magic combination...

    - blue Sprinco recoil spring
    - h3 / 5.4oz buffer
    - Superlative Arms gas block about 1/2 way open

    Runs great with Wolf Gold 55s a commercial 77gr match load, both suppressed and unsuppressed.
     
    Last edited: Sep 13, 2019
  16. NKD

    NKD Senior Member Benefactor Kimberless Supporting Member

    Joined:
    Dec 16, 2016
    Messages:
    5,341
    Likes Received:
    7,534
    Location:
    Chatham
    Cool.

    Why an H3 heavy buffer if you have adjustable gas?
     
  17. Tim

    Tim I am....an enchanter. Staff Member Benefactor Charter Life Member

    Joined:
    Dec 17, 2016
    Messages:
    5,077
    Likes Received:
    10,169
    Location:
    Hendersonville, NC
    It works?

    I couldn’t find that magical setup that allowed suppressed and unsuppressed with both bullet weights and without having to make adjustments until I put the blue (heavier) spring and H3 buffer in.
     
    Last edited: Sep 14, 2019 at 9:56 AM
    NKD likes this.
  18. Tim

    Tim I am....an enchanter. Staff Member Benefactor Charter Life Member

    Joined:
    Dec 17, 2016
    Messages:
    5,077
    Likes Received:
    10,169
    Location:
    Hendersonville, NC
    I also suspect that the OdinWorks block I had in place before is defective. FWIW
     
  19. NKD

    NKD Senior Member Benefactor Kimberless Supporting Member

    Joined:
    Dec 16, 2016
    Messages:
    5,341
    Likes Received:
    7,534
    Location:
    Chatham
    Ahh. Just curious. I don’t have much experience with cans and 556.