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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
Accuracy build help
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<blockquote data-quote="Bert01" data-source="post: 2970479" data-attributes="member: 109883"><p>Lapping isn't hard with access to a lathe, I had the luxury of being able to turn a mandrel to fit each upper I was working with. 100#'s is over spec and you have to be careful how you hold the upper to put that much torque on it. I have seen people rip the pin lugs off of the uppers trying to do it. We used a upper vise block with pins to hold the upper in the block, then put the whole thing in a vise, where one jaw was on the bottom of the vise block and the other jaw was on top of the actual upper, sandwiching the whole works together. The other thing is making sure the gas tube isn't being bent or hitting the carrier when everything is installed. </p><p></p><p>I have not done any testing to see how much improvement these things do, from a rifle with none of this done to one with all of it done. But every one I've built doing these things shoots better than it has any right to.</p></blockquote><p></p>
[QUOTE="Bert01, post: 2970479, member: 109883"] Lapping isn’t hard with access to a lathe, I had the luxury of being able to turn a mandrel to fit each upper I was working with. 100#’s is over spec and you have to be careful how you hold the upper to put that much torque on it. I have seen people rip the pin lugs off of the uppers trying to do it. We used a upper vise block with pins to hold the upper in the block, then put the whole thing in a vise, where one jaw was on the bottom of the vise block and the other jaw was on top of the actual upper, sandwiching the whole works together. The other thing is making sure the gas tube isn’t being bent or hitting the carrier when everything is installed. I have not done any testing to see how much improvement these things do, from a rifle with none of this done to one with all of it done. But every one I’ve built doing these things shoots better than it has any right to. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
Accuracy build help
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