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Posted: 8/30/2009 8:00:13 PM EDT
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Quoted:
Lastly with the rifle back together, pull the Charging handle all the way back and confirm that the front face of the bolt stops before the back of the ejection port (about 1/4' to 3/8"). If the receiver extension void depth is incorrect (allows the bolt to retract too far back), then the spent case will not clear the ejection port correctly, with the case thrown back forward into the action. i have the same problem and after reading this i decided to check and when i pulled the charge handle all the way back it goes back the front face of the bolt goes past the ejection port. How do i correct this? http://farm3.static.flickr.com/2555/3873245324_76e4e88d20_b.jpg |
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How many rounds have been sent down that barrel?
Have you checked: The extractor spring? Upgraded the spring w/the D ring or O ring? Have you looked at the edge of your extractor? Is it clean, gouge free and 'sharp' but not too sharp? Is the whole BCG clean and 'new'? Is the gas tube straight through a properly indexed barrel nut? Is the chamber clean and dry? There are a lot of things you should be looking at...this 'travel' issue is a new one to me. The above, in some form or another has happened on a few 'used' rifles I've fixed or purchased. |
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Quoted:
Quoted:
Lastly with the rifle back together, pull the Charging handle all the way back and confirm that the front face of the bolt stops before the back of the ejection port (about 1/4' to 3/8"). If the receiver extension void depth is incorrect (allows the bolt to retract too far back), then the spent case will not clear the ejection port correctly, with the case thrown back forward into the action. i have the same problem and after reading this i decided to check and when i pulled the charge handle all the way back it goes back the front face of the bolt goes past the ejection port. How do i correct this? http://farm3.static.flickr.com/2555/3873245324_76e4e88d20_b.jpg You have to shorten the receiver extension by facing the open end so it will thread into the receiver a turn or two more. If not a carbine receiver extension, the you will also need to face the stop collar as well to allow such. Or there is the option of buying a new tube and buffer to resolve the problem as well. Bottom line here is the something is amiss and the math of the components/ depth of the tube void is not working out correctly to limit the bolt in front of the back of the ejection port, but far enough back in the port that the hold open still works. |
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i did one more turn. a friend of mine looking at it says it is to much so i don't know what to do. here are some pics, does anyone else think it's to much?
http://farm4.static.flickr.com/3515/3875404401_214ecd006b_b.jpg http://farm3.static.flickr.com/2482/3875402581_1e093236e8_b.jpg http://farm3.static.flickr.com/2656/3875401589_979ba66b82_b.jpg http://farm3.static.flickr.com/2573/3876188752_4ea9338cf8_b.jpg it also doesn't seem to have helped all that much. when pulling the charge handle all the way back it's still behind the ejection port |
not normal
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pic of the buffer and spring. i hear the 3 weights rattling around. i turned it back out one since i couldn't get the buffer and spring out the way it http://farm3.static.flickr.com/2442/3876009295_49effdab6d_b.jpg not normal http://img.photobucket.com/albums/v151/gregw45/contact.jpg[/quote] that happened when i first got the rifle. the shop i bought it from is out of business...go figure 
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Back the tube off, pull the buffer retainer, then will holding the buffer back, lock the upper to the lower.
Now pull the charging handle all the way back, and start screwing in the tube until the butt stock indexes correctly, and the face of the bolt is just in front of the back of ejection port (but still behind the bolt catch. Now mark the tube in a way that you can return it to the position after you have screwed it back out to unlock the upper again. From there with the upper open, screw the tube back in the depth you have it, then mark the top of the tube that is protruding into the receiver past the inside of the receiver threads top ring, and the bottom of the tube where it will need to be to just kiss the center of the buffer retaining pin. Once you have those marking, remove the tube and face the end of the tube to the marks. The receiver extension depth/void dictates the amount that the B/C/buffer combo will allow the bolt to retract back into the tube. As for now with the one more spin as is, the center post of the retainer is bending, which will promote it to snap, and the top of the tube is protruding into the lower receiver void, which may not allow the upper to lower into place. Bottom line here, the parts can be saved if you put in some time to do so, or you have the option of buying all new parts (which may put you back in the same boat, or resolve the problem). |
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