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Posted: 11/4/2014 7:47:54 PM EDT
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Recently picked up a new upper receiver that will not accept a bolt carrier..........any bolt carrier.
Tried 4 different makes of carriers and none fit. Only way to make one fit would be to hammer into place. How common is this situation ?? gd |
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Sorry about taking this long to answer ya'lls questions.
Yes I had the bolt extended. This is a new receiver and did not have the gas tube in place. Just trial fitting parts at the moment. The bolt carrier would not even begin to fit the receiver. Had a knowledgeable person look at the receiver and he basically said, " It happens ". Thanks for the replies. gd |
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Quoted:
Sorry about taking this long to answer ya'lls questions. Yes I had the bolt extended. This is a new receiver and did not have the gas tube in place. Just trial fitting parts at the moment. The bolt carrier would not even begin to fit the receiver. Had a knowledgeable person look at the receiver and he basically said, " It happens ". Thanks for the replies. gd If this is the case, then I would return it to wherever you bought it and get your money back and go buy an upper receiver from a more reputable manufacturer/vendor. |
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If this is the case, then I would return it to wherever you bought it and get your money back and go buy an upper receiver from a more reputable manufacturer/vendor. Quoted:
Quoted:
Sorry about taking this long to answer ya'lls questions. Yes I had the bolt extended. This is a new receiver and did not have the gas tube in place. Just trial fitting parts at the moment. The bolt carrier would not even begin to fit the receiver. Had a knowledgeable person look at the receiver and he basically said, " It happens ". Thanks for the replies. gd If this is the case, then I would return it to wherever you bought it and get your money back and go buy an upper receiver from a more reputable manufacturer/vendor. You are correct Sir !!!! Returned today. They sent a return label and away she went. gd |
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Quoted: Not really - unless you're buying from a bottom feeder; I don't think I ever heard of this issue even with Hesse. Quoted: Quoted: Had a knowledgeable person look at the receiver and he basically said, " It happens ". Not really - unless you're buying from a bottom feeder; I don't think I ever heard of this issue even with Hesse. How do you machine a hole that is that much under sized on a CNC machine?
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News to me also. How do you machine a hole that is that much under sized on a CNC machine? Quoted:
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Had a knowledgeable person look at the receiver and he basically said, " It happens ". Not really - unless you're buying from a bottom feeder; I don't think I ever heard of this issue even with Hesse. How do you machine a hole that is that much under sized on a CNC machine? Type the wrong dimension into the computer? Load the wrong cutter in the machine? |
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Quoted:
Not really - unless you're buying from a bottom feeder; I don't think I ever heard of this issue even with Hesse. Quoted:
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Had a knowledgeable person look at the receiver and he basically said, " It happens ". Not really - unless you're buying from a bottom feeder; I don't think I ever heard of this issue even with Hesse. We all know stuff happens. I had a BCM BCG that would not slide smoothly into an Aero Precision upper. Both companies considered quality manufacturers. I don't know which part was off, but a quick swap between parts and none of my other parts were incompatible, so I just made sure not use that BCG in that upper. I also had one of the BCM uppers which would not pin onto multiple lowers. Sometimes, some magazines will not fit in certain brand lowers, even with some of the better known companies out there. How about those stripped uppers with unequal side walls a few months back. As long as the company is stepping up, I don't see what the big deal is. Stuff happens all of the time. |
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I'm interested in where exactly the upper kept the carrier from entering - charging handle tunnel, or main body diameter? From OP's description it sounds like it was the main body of the carrier.
I can't see a single error in a keyboard entry causing this. I can see a screwed up CNC program happening, though. In particular, the bore of the upper could have been bored incorrectly in a couple of ways, but the diameter? That's a CNC goof. |
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Since I see that there is still some interest regarding the uppers tolerances let me respond to the best of my knowledge. Which is limited at best.
GHPORTER asks if it was the main body of the upper. It was. Carrier would not /could not fit at all. Even after trying 4 different carriers. The charging handle tunnel was fine. No binding at all. And as far as the manufacture, it is Anderson. But as stated , so far they have stepped up and taken the upper back without any guff. And I am going to try another of their uppers. Which should arrive next week. And I will be checking it out before I get started putting the build together. gd |
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Quoted: I'm interested in where exactly the upper kept the carrier from entering - charging handle tunnel, or main body diameter? From OP's description it sounds like it was the main body of the carrier. I can't see a single error in a keyboard entry causing this. I can see a screwed up CNC program happening, though. In particular, the bore of the upper could have been bored incorrectly in a couple of ways, but the diameter? That's a CNC goof. |
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