7.5" Pistol build / Compensator

Discussion in 'AR-15 Discussion' started by Sgt_Skrb_25, Jan 14, 2013.

  1. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    Starting my 10th build and my first AR pistol build. It is a 5.56 with a 7.5" barrel. I have been reading a lot about cycling issues. From what I have gathered, I need to create some extra back pressure to help cycling. I keep seeing the PWS CQB and the Noveske "flaming pig" coming up as solutions. Has anyone tried any other devices that work well? Any input would be appreciated, thank you
     
    Last edited: Jan 14, 2013
  2. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    The other alternative is to run a H3 buffer, but why buy another buffer wen I still need a muzzle device.
     

  3. purehavoc

    purehavoc New Member

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    I use the Troy Claymore on my 7" SBR works fine, cycles eveything from cheap Tula to match grade ammo . I would not run a H3 buffer til you know it works on a carbine buffer first . One of the things I have found out is it will not cycle .22lr ammo with the .22 conversion kit which tells me it does not have the oomph like it does in a 16" barrel that cycles it fine . throw in a H3 buffer with lower gas pressure and you got problems . I run a 3.8oz buffer in mine which would be about equivalent to a H buffer . Remember they all run different depending on the gas hole size shorter barrels are some times finicky so be patient , just buy a barrel from a reputable manufacturer .
     
  4. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    Thanks for the info. I just got everything to finish the build except the upper receiver. I've thought about the claymore. Might be good with the claymore because I only have half the threads sticking out of the rail anyway. Need to come out an inch or too. I'll give it a shot with the H buffer first. Thanks again Purehavoc!
     
  5. purehavoc

    purehavoc New Member

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    No problem , once you go SBR and get that stamp it will be a bad addiction , you think BRD is bad you aint seen nothing yet ;)
    I will see how my new one goes but it may get a stamp also and get sent back to KRISS to go SBR


    [​IMG]
     
    Last edited: Jan 17, 2013
  6. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    I ended up getting the PWS CQB. I'll get the Claymore on the next build. I have other PWS muzzle devices on other builds , and they work great.
     
  7. rachilders

    rachilders New Member

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    I use the Noveske "pig" style on the 9.5" SBR I built a year or so ago and the gun has had no problems. Only thing to be aware of is due to the design, if you are on the front end - off to the side obviously - of the gun there is a major increase in felt blast and concussion. OTOH, for those behind the gun there is a noticeable DECREASE in noise level.

    FYI, my gun started out as a pistol (PLR-16) so it was already set to run with a shorter barrel using a gas piston design. The compensator I installed was more to help control the blast, but it also seems to improve and increase the speed of the cycling process by increasing back pressure.
     

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  8. KingTiger

    KingTiger Member

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  9. purehavoc

    purehavoc New Member

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    Mine is a DI rifle. Sometimes they do have issues. Most of them easily worked out. Just check the gas hole for debris before u build it. I'm not a big piston fan but they seem to work well in a sbr. I can just do with the extra weight and proprietary parts. If it breaks I want capatable parts quick
     
  10. AgentTikki

    AgentTikki New Member

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    As Havoc knows, linear compensators also doulbe as great leaf blowers and deck de_ icers.


    In response to your question tho, linear comps increase the dwell time. So if your build is short cycling it will help a lot. Also don't start with a h3. Heavier buffers. I run a 7.5 with a kx3 and a h1 buffer. Cycles weak stuff just fine. A h2 buffer on my build induces short cycling with some of the weaker ammo. Ymmv.
     
  11. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    I'll keep that in mind, thanks
     
  12. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    I actually got the Phase 5 pistol buffer tube assembly, not sure what kind of buffer comes with that. I'll have to check unless someone knows?
     
  13. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    Almost done with the 7.5 pistol build , just waiting on my dust cover and forward assist and compensator.
     

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  14. AgentTikki

    AgentTikki New Member

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    Sweet looking build! More pics plzzzzzzz!
     
  15. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    Thanks AgentTikki ,Some more pics of my almost done pistol.
     

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  16. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    I just realized I have my sights on backwards. I threw them on just to get a semi- finished build pic. I looked at the picks and thought it looked off. Brainfart!