Hello to all and im glad i finally joined the group, I have been absorbing the knowledge for quite a while and i thank you all for your wisdom. I have a problem , i have an M-1a that i love and has worked flawlessly till this point, i have fed my rifle 2000+ rounds of surplus, commercial and hand loads without failure untill this point. I have never had any repairs or adjustments made to the rifle, have never replace the extractor with usgi extractor and now my bolt will not close all the way and extractor will not easily grab cartridge. I ordered some usgi bolt gut kits hoping that its all i need and hopefully anyone with similar experience feel free to jump in. Thank you in advance.
Have you kept the gas system and chamber clean of debris and carbon build-up? Boltface and extractor clean of brass fragments? Is the gas plug screw down tight? Barrel's gas port free of carbon and copper/lead? Op rod spring gone weak? At 2K rounds it's a good time to replace it anyway. I don't know if you need to replace all the bolt guts or if they have anything to do with your immediate issue, but it can't hurt anything to swap in GI parts for the commercially-made ones..
I haven't tried taking the guts out, the problem persists with any round I try to chamber,gas system is squeaky clean,chamber is clean,bolt disassembled and cleaned with drill bits,ill order an op rod spring
If this is happening only with handloads, check and see if perhaps your case headspace has changed. Should be somethng like 3-5 thou less than chamber. Common problem with handloads. Your die does not have to back out much to cause this problem. 1/16 turn or less and its a no go situation.
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