AR Buffer Weight to Slow Down Ejection

Discussion in 'Rifle Country' started by DMW1116, Oct 16, 2021.

  1. DMW1116

    DMW1116 Member

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    I’ll probably leave it alone. If it’s not an issue then I won’t mess with it just to say the brass lands where my other loads do. This load shoots really well out of this rifle and the rifle has been 100% reliable even with cheap Tula ammo. I don’t want to change anything unless I must.
     
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  2. mcb

    mcb Member

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    If you just trying to save your brass or keep them from pelting the shooter to the right of you at the range you could simple buy a brass catcher. Attached it when you need it and take it off when you don't. A tarp on the ground works pretty good if there is room.
     
  3. gifbohane

    gifbohane Member

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    I bought one a few years back and no matter what I do to modify it the brass bounces back off the netting. It is better than showering my neighbor with brass but not much better.

    Wish I knew a better alternative .................without having to carry more heavy gear to the range.
     
  4. mcb

    mcb Member

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    There are a bunch of and wildly varying brass deflector gadgets on the market. From things as simple polymer bumpers that are stuck to the brass deflector on the upper to some deflectors that hook to the picatinny rail, etc. Most of them will greatly reduce the distance brass is ejected without more drastic changes to the gas/recoil system.
     
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  5. someguy2800

    someguy2800 Member

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    I don't know if you shoot from the bench or not but this works pretty good for me. I carry all my stuff to shooting bench in it and then it doubles as my brass catcher. I hate the mesh bag things

    tub-3.jpg
     
  6. DMW1116

    DMW1116 Member

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    Now there is an idea worth checking into. I shoot from a bench 99% of the time but I don’t know if there is room to use such a thing. I’ll look into it.
     
  7. herrwalther

    herrwalther Member

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    That is incredible. Have you tried the adjustable gas key compared to having an adjustable gas block? I've been curious about adjustable blocks but didn't want to go that route for a few reasons, cost one of them.
     
  8. bfoosh006

    bfoosh006 Member

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    I was going to suggest you not do anything. If it is shooting excellent groups... 2:30-3:00 ejection isn't the end of the world.

    IF, you wanted to try something... maybe consider a Tubbs 5.56 Flatwire recoil spring.
    And you could limit gas flow with a Black River Tactical gas tube... they constrict the gas flow at the gas tubes opening.
     
  9. Skylerbone

    Skylerbone Member

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    I run adjustable gas blocks so I have not tried it but have read a large sampling of reviews that indicate positive results.
     
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  10. MistWolf

    MistWolf Member

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    The problem with an adjustable gas key is it restricts gas after the gas tube. It’ll slow down the carrier speed but doesn’t do anything to reduce the schmootz dumped into the action after tube and key separate.
     
  11. ClemY

    ClemY Member

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    I have measured the gas bushings in a few Mini-14's and they were 0.080" to 0.100" which is way too big. There is a cottage industry that make smaller bushings for the Mini. I find mine works well with a 0.046" bushing.
     
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  12. ClemY

    ClemY Member

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    The 6.8 oz. buffer is with an adjustable stock, not the longer tube fixed stock. And yes, I use the 6.8 in rifle length gas systems 18" and 20" guns, with adjustable stocks.
     
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  13. RevolvingGarbage

    RevolvingGarbage Member

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    It wasn’t intentional, but the combination I made of a PSA standard carbine lower (not exactly sure which buffer they used) with a 20” upper works perfectly and also ejects brass very softly right at 3 o’clock.
     
  14. mcb

    mcb Member

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    Similarly, I have a 22 inch barrel (30RAR) with rifle length gas system that works just find with a carbine receiver extension, buffer, and spring.
     
  15. NWcityguy2

    NWcityguy2 Member

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    There is no rule about certain length barrels needing a specific buffer system. Also, going up in weight on the buffer only adds a small amount of weight to the overall moving mass.

    It's not buffer vs buffer. It's buffer+BCG vs buffer+BCG.
     
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  16. Pivot Dr

    Pivot Dr Member

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    Have you considered the heavier M-16 full auto bolt carrier. When I put together my custom AR-15 with either a 20” or maybe it’s a 22” Kreiger match barrel, the folks at Brownell’s suggested I consider that bolt carrier to slow down the cyclic rate. I also have a JP adjustable gas block too. That has worked out well for me. When I change loads and I don’t like how it cycles, which is rarely, I just close the block until it quits cycling and open it back up again until it cycles to my satisfaction. I know an adjustable gas block isn’t cheap or easily replaced but the heavier bolt carrier is quite easy to install.
     
  17. Skylerbone

    Skylerbone Member

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    Bah! Takes maybe $60 and 20 min. for a novice to install an AGB. Last one took me 5 shots to dial in, also a JP. Worth every dollar and then some.
     
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  18. DMW1116

    DMW1116 Member

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    I’m pretty sure I have the heavier bolt carrier. I’ll double check to be sure.
     
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