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Posted: 4/7/2008 10:40:40 AM EDT
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Switched lower recievers and buttstocks (inc buffer spring and tube) and now having all sorts of problems with my M-4rgery... light primer strike misfires, and failure to fully extract , leaving the spent casing jammed in the top of the reciever and the newly unfired cartridge halfway into the chamber... Using Guat surplus.. tried 2 diff mags, same problem. I dont see how it could be the carrier because it worked fine with the other lower... I'm leaning toward the buffer/spring, but neither explains the light primer strikes Ideas? Jeff |
All else being equal except for changing the lower reciever, buffer spring and tube is one a regular buffer and the other an H buffer? Is it safe to assume you've not fired this particular lower before? Was the bolt carrier different? Lots of variables here. |
Self assembled lower, I will check for the hammer binding, sounds like a possibility that might cause both symptons.. Thanks Jeff |
| Had a problem with the hammer binding when I put a Bushmaster 2 stage trigger group into a S&W M&P15. Replaced it with a RRA 2 stage trigger group and it works beautifully. I put another RRA 2 stage into a RRA lower and it feels a little sticky. Go figure. I guess all these standard milspec dimensions are not so standard? |
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