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  #1  
Old 10-27-2019, 01:11 PM
rubicon762 rubicon762 is offline
 
Join Date: Aug 2011
Location: Greater Cleveland, Ohio
Posts: 470
Default Brass ejects to next county.Shorten spring?

Hi all
My match AR-15 seems to eject brass into the next county!

A fellow shooter suggested "shorten" the ejector spring one coil. Do any of you do this?

Thank you in advance for help.
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  #2  
Old 10-27-2019, 04:34 PM
zippysrifle zippysrifle is offline
 
Join Date: Jan 2010
Location: 173 miles E of the NS in Pennsylvania
Posts: 590
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Yes, I trim mine. Two to three coils should do the trick. Three coils off kicks my brass out at about 2 o’clock. YMMV. Ejector springs are cheap, give it a try.
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  #3  
Old 10-27-2019, 05:32 PM
WindLogik WindLogik is offline
 
Join Date: Dec 2012
Location: Washington State
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Quote:
Originally Posted by rubicon762 View Post
Hi all
My match AR-15 seems to eject brass into the next county!

A fellow shooter suggested "shorten" the ejector spring one coil. Do any of you do this?

Thank you in advance for help.
Are you using a carbine buffer system? I you use a carbine buffer system with a rifle length gas system, this is a normal problem (timing is wrong and bolt unlocks way, way to soon). The fix is to use an H2 or H3 buffer. Use the heaviest one you can get away with.
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  #4  
Old 10-28-2019, 12:24 AM
HighpowerRifleBrony HighpowerRifleBrony is offline
 
Join Date: Nov 2015
Location: Texas
Posts: 225
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Velcro on the deflector should take some bounce out.

Trim the spring til the ejector is a little proud of the lugs. When reassembled, it should be just stiff enough to flex your thumbnail before descending into the bolt. If it throws to 1:00, but you have a standard carbine buffer, switching to an H2-3 should wind it back to 2:00.

I'd piggyback some extra springs and roll pins on your next parts order.
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  #5  
Old 10-28-2019, 06:38 AM
Kilo-Sierra Kilo-Sierra is offline
 
Join Date: Feb 2010
Location: Atlanta
Posts: 573
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My SR's and MM have been tuned to throw the brass about 3' away at 2:00 in neat little pile. I trim the spring and test, trim the spring and test again. It usually takes me about 2-3 times to get it just like a want. First time I did it I went too much and it barely dribbled out of the ejection port....not good. I agree with the buy extra springs suggestion.

Keith
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  #6  
Old 10-28-2019, 06:21 PM
Louisxllx Louisxllx is offline
 
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Location: Austin, Texas
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Yes.
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  #7  
Old 08-28-2020, 02:10 PM
HB of CJ HB of CJ is offline
 
Join Date: Nov 2011
Location: 42N -123W OR USA Kinda
Posts: 1,252
Default Check For Over Gassing Also ...

Easy to check to see if the gas port diameter is too large. This would affect the timing and MAY be responsible for tossing the brass into low earth orbit.

Remove the two taper pins and slide the front site base off the barrel. I THINK the stock 20" rifle gas port diameter is around .0935. Don't hold me to it.

Easy to find out via the internet. Lots of videos on how to trouble shoot over gassing and distant brass ejection. Lots and lots of combinations available.

Ideally what might work best is a stock OEM type combination of parts. Or ... keeping adding buffer weight until the brass comes out in a small close pile.
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  #8  
Old 08-28-2020, 08:18 PM
HighpowerRifleBrony HighpowerRifleBrony is offline
 
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Location: Texas
Posts: 225
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Gassing affects direction more than distance. These aren't AKs with fixed ejectors.
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