I have a newly built AR308 that is having some teething problems. The JP internals I used include barrel, bolt, bolt carrier, and captured return spring. The issue I am having is sometimes it will not eject the spent case causing it to trying load a fresh round and the old case at the same time. It only happens every 10 rounds or so and that number is not scientific.
When it does eject the spent casing it will throw it 2 to 3 shooting benches down the line; I have checked the ejector and it moves freely and has good tension.
I talked to a few gentlemen at the range who noticed that there are marks on the cases where the extractor latches on to the case. I went home and took the bolt apart and compared the parts to a dpms parts kit I have and noticed that the extractor spring is about half the height of the parts kit spring. Does JP use a different spring?
I took my ar15 bolt apart and noticed the jp extractor spring is about the same height. Do the springs interchange?
Thomas
When it does eject the spent casing it will throw it 2 to 3 shooting benches down the line; I have checked the ejector and it moves freely and has good tension.
I talked to a few gentlemen at the range who noticed that there are marks on the cases where the extractor latches on to the case. I went home and took the bolt apart and compared the parts to a dpms parts kit I have and noticed that the extractor spring is about half the height of the parts kit spring. Does JP use a different spring?
I took my ar15 bolt apart and noticed the jp extractor spring is about the same height. Do the springs interchange?
Thomas
