Looks like feedback then should go to Frank at Maxim.
Liberty Barrel Group Buy Build Comments
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I thought I responded in this thread as well, but my bolt fit fine and the BCG cycles without any issues. As for how it is when firing, I won't be able to report on that until the 20th.If you are an Iraq or Afghanistan veteran please visit this site, you've earned it.
http://www.outwardbound.org/course-f...ran-adventures
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Originally posted by Sputnik View PostHas anybody had any difficulties inserting their bolt into their bolt carrier? I could not insert by bolt until I noticed that the extractor tail measured .015 inches above the rest of the bolt surface. I lifted the claw up to lower the tail and it slid in.
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I put my Maxum bolt together and it works fine. Tight fit is good and it will loosen as it wears together. The tightness on mine is the rings which you want tight. Once you get the bolt into the carrier the extractor may rub but not sure if that is how they all are or not.
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Originally posted by Walter View PostIs this just a case of the first time someone put together a bolt.
No worries! I think the common observation is very tight gas rings, which I acknowledged and others have verified. My observation was that my extractor does not look like all others I have seen; as the image clearly shows the spring end of the extractor is not flush with the rest of the bolt. Anything to worry about? Uncertain. Should everyone be aware? definitely!
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Originally posted by Sputnik View PostOuch! Please nobody tell my CO, that in my 25 years in the Corps, I can't put together a bolt
No worries! I think the common observation is very tight gas rings, which I acknowledged and others have verified. My observation was that my extractor does not look like all others I have seen; as the image clearly shows the spring end of the extractor is not flush with the rest of the bolt. Anything to worry about? Uncertain. Should everyone be aware? definitely!
I just compared an AR-Stoner (used one in my Grendel), a new Maxium and new LBC Bolt. All the measuremnts work out so that is what I'm seeing.
I also measured the OAL of the Grendel bolts and a 223, the Grendels are 2.810 and the 223/556 are 2.800. As it was brought up in the past, they added .010 to the OAL of the Grendel Bolts for the firing pin protrusion.
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I assembled mine and no problems that I was aware of. However, I will say this is my first build and first time I've assembled a bolt. So with that said I wouldn't know if there was a problem unless it jumped up and bit me. Still waiting on mags and a scope and thread protector/muzzle device. I did look to see how much firing pin extended past the bolt face and noticed it was very little, so not worried about punturing primers.
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Understood, and I agree with you. It was just strange to see both of my other Grendel bolts "heel" be flush with the bolt surface. And this one stick out .015. It obviously rubs the inside of the carrier as the heel tip's finish is now shiny. Just an observation that I wanted to throw out there. Thanks!
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Originally posted by customcutter View PostI assembled mine and no problems that I was aware of. However, I will say this is my first build and first time I've assembled a bolt. So with that said I wouldn't know if there was a problem unless it jumped up and bit me. Still waiting on mags and a scope and thread protector/muzzle device. I did look to see how much firing pin extended past the bolt face and noticed it was very little, so not worried about puncturing primers.
As for the extractor, I have Extractors from Maxum, not the ones from Satern. I am sure Satern got those bolts with the groves on them from Maxum but got extractors from there other bolt source. So when people get theirs, I would like to know if they notice what Sputnik was talking about.
I don't think it will matter but as Spuntnik has noted, it does make contact to indicate wear.
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Does the claw end of the extractor lay below flush?
It sounds to me like the extractor is pivoting in too far. It may prevent the rim from making its way into the bolt recess.
Since different extractors act the same in each bolt, the cutout in the bolt is probably too deep. The pin location is probably OK, or the bolt wouldn't fit in the carrier at all.
You may try building up the cutout in the bolt with Devon or JB Weld, or you could add some to the extractor. You could put on extra and sand it down till the extractor laid flush.www.FriendsvillePrecision.com - AR15 Dry Fire Device
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Originally posted by Tedward View PostI had a few other manufacture of bolts earlier this year from Tactical Ammunition and R-Guns. Those 2 I don't have now but did notice the firing pin issue of it protruding further. I did measure the bolt face (.135) but didn't think to measure the Bolt OAL. One of the 2 of them had less firing pin protrusion so must have been shorter (modified 223/556 bolt). I never knew there was a difference in length till Maxum told me they compensate (made the bolt tail longer) for the deeper head space to keep the firing pin in the correct place.
As for the extractor, I have Extractors from Maxum, not the ones from Satern. I am sure Satern got those bolts with the groves on them from Maxum but got extractors from there other bolt source. So when people get theirs, I would like to know if they notice what Sputnik was talking about.
I don't think it will matter but as Spuntnik has noted, it does make contact to indicate wear.Underground Tactical Arms
Austin, Texas
www.undergroundtactical.com
www.facebook.com/undergroundarms
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Whoa! we are getting way ahead of ourselves with speculations and finger pointing. I merely wanted to alert Liberty Builders I had some difficulty with inserting my bolt into the carrier, with tight rings and a peculiar looking protrusion. and the spring end of the extractor. Personally, I don't think it is the extractor. The extractor fits nicely in my AA bolt. Without detailed competent measurements and inspection, which I am not capable of doing, we need to be careful. We won't be able to "unring" alarm bells to some readers. I would be happy to mail this bolt to anyone that feels curious enough; capable enough to examine it. As long as I get it back. Mark comes to mind, since he has an interest in Maxim bolts, but he is somewhat out of the picture lately.Last edited by Sputnik; 01-12-2014, 01:07 PM.
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Originally posted by dmsims21 View PostDoes the claw end of the extractor lay below flush?
It sounds to me like the extractor is pivoting in too far. It may prevent the rim from making its way into the bolt recess.
Since different extractors act the same in each bolt, the cutout in the bolt is probably too deep. The pin location is probably OK, or the bolt wouldn't fit in the carrier at all.
You may try building up the cutout in the bolt with Devon or JB Weld, or you could add some to the extractor. You could put on extra and sand it down till the extractor laid flush.Last edited by Sputnik; 01-13-2014, 12:42 AM.
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