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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
6.5 Grendel Upper Build
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<blockquote data-quote="catorres1" data-source="post: 1208014" data-attributes="member: 80699"><p>Thanks for the response. One thing I was told by a builder is that while lower to upper fit generally does not make a difference, when we are talking sub .5 MOA, it matters. </p><p></p><p>I checked the Aero upper to the Aero lower I have. Unfortunately, it's a somewhat sloppy fit in the front, leaving a lot of lateral movement. My Anderson lower is actually about 4 or 5 thousandanths tigher. I checked an HK 416 lower for comparison, and it's probably 16 thousands tighter or so. </p><p></p><p>So now I am looking at lots of variables. Looks like the front lugs on all the upper receivers I have are about the same, it slop in the lower that is showing up. </p><p></p><p>Anyway, I am going to research options on how to fix it, looks like a shim can probably do the trick, but I did find a builder that is going to true the upper and be the whole thing for a decent price, so I'm going to do my best to cover all the possible variables.</p></blockquote><p></p>
[QUOTE="catorres1, post: 1208014, member: 80699"] Thanks for the response. One thing I was told by a builder is that while lower to upper fit generally does not make a difference, when we are talking sub .5 MOA, it matters. I checked the Aero upper to the Aero lower I have. Unfortunately, it's a somewhat sloppy fit in the front, leaving a lot of lateral movement. My Anderson lower is actually about 4 or 5 thousandanths tigher. I checked an HK 416 lower for comparison, and it's probably 16 thousands tighter or so. So now I am looking at lots of variables. Looks like the front lugs on all the upper receivers I have are about the same, it slop in the lower that is showing up. Anyway, I am going to research options on how to fix it, looks like a shim can probably do the trick, but I did find a builder that is going to true the upper and be the whole thing for a decent price, so I'm going to do my best to cover all the possible variables. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
6.5 Grendel Upper Build
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