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which "gasbusting" charging handle works best?

Discussion in 'NFA Firearms and Accessories' started by 1KPerDay, Oct 20, 2015.

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  1. 1KPerDay

    1KPerDay Member

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  2. Elkins45

    Elkins45 Member

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    I have no info for you, just piggybacking only your question. Is there one that is better for lefties?
     
  3. 1KPerDay

    1KPerDay Member

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    Yeah, I shoot long guns lefty also. I should have said.

    However, on second thought, the AR in question is for a righty primarily so... whatever works best for him would be the one.
     
  4. W.E.G.

    W.E.G. Member

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    None of them significantly mitigate gas-in-the-face from shooting suppressed SBR's.

    The overwhelming amount of gas blows out of the breech when the bolt cycles. Only a small amount escapes around the charging handle.

    I had the "Gasbuster" model and it didn't help a bit with the eye-burning issues when shooting the suppressed SBR in still air.

    Screen shot from random youtube vid.
    Consistent with my personal experience.
    suppressorsilencergasface.jpg
     
  5. agtman

    agtman Member

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    You might want to try the PRI "gas-buster" CH, but as was said, it's a half-measure at best. You'll still get some amount of felt-gas in the face.

    Some install an XP recoil spring along with either an H-2 or H-3 buffer, testing each for reliability, and then run the heaviest buff that the action will cycle reliably when shooting that particular ammo.

    The theory is that the heavier recoil set-up delays the speed at which the bolt carrier cycles, and therefore somewhat diminishes the gas being spewed back with it from the suppressor (which is essential over-gassing the D.I. system).
     
    Last edited: Oct 22, 2015
  6. wally

    wally Member

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    I never shoot without eyepro -- especially when shooting suppressed. Just never been an issue for me. But I can see how it'd be worse for a lefty.

    I'd suggest trying a heavier buffer to give it a few more milliseconds so more gas can vent out the front. IMHO the extra strength recoil spring is a waste of time. Is it an AR-15 or M16 carrier? The extra mass of the M16 carrier also helps.
     
  7. CoRoMo

    CoRoMo Member

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    When I combine my LMT with my SpecWar, I get hit hard and regular eye pro doesn't help. Gotta use goggles on that thing or else. I've never tried a different charging handle or any modification either though.
     
  8. Elkins45

    Elkins45 Member

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    They make a gas buster forward assist but that would be miserable for a lefty.

    I may drill vent holes on the left side of my upper.
     
  9. rjrivero

    rjrivero Member

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    RTV Dam: https://www.youtube.com/watch?v=VQIK_tbiN5whttps://www.youtube.com/watch?v=VQIK_tbiN5w

    You can also do the "Gashole" modification, drilling into the right side of the charging handle which works pretty well and costs a whole lot less than a replacement charging handle.

    photo-11.gif

    This can be done on the opposite side,for you lefties, but you must take the latch and spring out first, drill it out as big as you can, then reassemble. It works as good as the PRI and doesn't cost as much.
     
  10. 1KPerDay

    1KPerDay Member

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  11. USAF_Vet

    USAF_Vet Member

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    Geez. With that much gas blow back, it might be worth it to switch to a piston upper.
     
  12. Elkins45

    Elkins45 Member

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    An adjustable gas block would be a cheaper option to try first, and it might make things last longer. I think most ARs are overgassed anyway.
     
  13. W.E.G.

    W.E.G. Member

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    When 90% of the gas that you eat when shooting a suppressed AR comes back down the barrel, and out through the breech, how does the piston mechanism mitigate that?
     
  14. agtman

    agtman Member

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    Drilling a "gas hole" in the side of the CH to vent the gas out to the right (or left) sounds like a simple and effective mod.

    Possibly it operates to vent gas in somewhat the same way as the "Hatcher hole" modification that was done to Springfield 1903 receivers?
     
  15. 1KPerDay

    1KPerDay Member

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    Gonna try the gasket goo first.
     
  16. HRnightmare

    HRnightmare Member

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    PRI "gas-buster" has worked just fine for me on a suppressed 10.5" SBR. I feel little to no blowback. I felt an uncomfortable amount without the PRI charging handle.
     
  17. 1KPerDay

    1KPerDay Member

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    Goo (silicone/RTV gasket sealant stuff) worked pretty well. right handed shooting is now fine, though you do notice a puff of gas going by your right eye. Like someone blowing PAST your face.

    Left handed it helps significantly. still get a puff of gas coming out of the chamber or maybe the forward assist, but definitely not as bad as before.
     
  18. Gtscotty

    Gtscotty Member

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    Hmm, I tried my Saker 762 on my midlength gas 16in AR the other day and aside from cases ejecting further forward didn't notice any bad behavior. Is this mostly a problem for lefties, or SBRs?
     
  19. 1KPerDay

    1KPerDay Member

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    Indoors or outdoors? I may not have noticed anything if it were breezy outdoors and shooting right-handed. Rifle in question is a 16" carbine.
     
  20. Gtscotty

    Gtscotty Member

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    Outdoors, maybe that helped. After reading about GTF problems with suppressors on AR'S, I was expecting issues, but just didn't notice any problems. I only fired 30 or so rounds the other day, so that's far from conclusive.
     
  21. taliv

    taliv Moderator Staff Member

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    i'm lefthanded. my righthanded friends have never spoken highly of the gas buster, and they're definitely worse for lefties, but i have had a lot of luck from doing 3 things:

    putting silicon caulk to seal the area between the CH and receiver on the top. lots of instructional threads with pics on other forums. do a bit of googling

    using the noveske switchblock. i'm sure others will work fine, too, but the suppressed setting really works great.

    using a heavier buffer to slow the opening of the bolt, which gives chamber pressure just an extra instant to drop
     
  22. agtman

    agtman Member

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    RJRivero:

    What drill bit size was used to make that "gas hole"?
     
  23. Arizona_Mike

    Arizona_Mike Member

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    I still get a ton of gas suppressed from my mid-length piston upper. I think the silencer is acting as a gas reservoir which drains both for and aft after the bullet and case are gone.

    Mike
     
  24. LiquidTension

    LiquidTension Member

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    The RTV sealant method works well. I also have an Innovative Arms Warfighter Adjustable Receiver on my 11.5" and it helps a lot. It's not really an option unless you're building an upper from scratch, though.
     
  25. 1KPerDay

    1KPerDay Member

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    In case anyone wants to watch a video demonstrating the results. Still pretty much just me talking about it and shooting.

    https://youtu.be/4inFFeT6t_U
     
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