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Posted: 2/18/2010 7:49:06 AM EDT
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With my limited vocabulary I am not entirely sure what to call this "problem".
Basically I am a lefty and have shot many AR's without any problem, until now. I just got a new Bushmaster Carbon 15 M-4, it is completely stock still. The problem is the empty shell case is ejecting almost straight back to about the 5:00-5:45 position (on a clock). These are hitting me roughly, in my right eye (thank you safety glasses!)! I'm hoping this is a simple fix, replace a spring, or tweak something to get them to eject more to the 3 o'clock position. If this has already been addressed in another post I apologize, I looked a little but didn't know exactly what to look for. Any advice would be great! Thanks guys! |
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I think you will enjoy reading this -
Adjusting the ejection pattern (PDF) Welcome to arfcom by the way! |
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Thank you! That exactly address' my issue, however it mentions at the end that ejection goes rearward after time and to change the spring if it's to far to the rear, which leads me to believe that a worn spring causes it to go rearward, however having only 10-15 rounds through the rifle, would simply "replacing the spring" change anything? Or is there a different type of spring I should get?
Thanks again for the super quick reply, that exactly describes my issue, I guess I'm looking for some advice on what to replace, and with what brand/model? |
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reading that correctly, speeding up your cycling rate should make the shell eject more forward (between 1 and 3 according to that document). the most common method i'm aware of is going with a "hotter" round or going with a softer buffer spring. either of these is going to increase recoil and sight jump.
now, i've not researched this, but i seem to recall seeing extractor spring upgrade kits as well, which would give you a stronger extractor as described in the article, and move the ejection trajectory forward. mine ejects between 3 and 4. so i didn't see it as a problem. |
| Follow the advise at the end of the article regarding the ejector spring. Although if you have a little patience, remove a HALF coil at a time rather than a full coil. By going a half coil at a time you ensure you don't remove more than is necessary, which could end up causing problems. I did this years ago and it worked perfectly. Took me 2 and a half coils. No problems since. |
| I had a problem with too strong of an extractor spring. The extra powerful extractor pushed the case so hard against the opposite side of the bolt that the ejector spring couldn't get the fired case off the bolt fast enough. I ended up with quite a few stovepipe malfunctions. I put in an older spring with the little blue fiber center piece. That lowered the power of the extractor spring to the point that my stovepipes disappeared. |
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