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The Range
Military Surplus
my garand at the range
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<blockquote data-quote="Perplexed" data-source="post: 2350676" data-attributes="member: 7157"><p>First, try moving the rear hand guard back and forth (along the barrel) with everything installed. If you can slide it about the thickness of a credit card, there's enough play and you'd move on to other causes for the stringing. In this case, check the tightness of the gas cylinder lock - ideally, you'd be able to spin it onto the barrel and get close to "finger tight", then back off enough that you can install the gas lock screw. You do NOT want to force the gas lock tighter until it lines up with the gas cylinder, because that can cause vertical stringing. It's actually preferable for the lock to be a bit loose than a bit tight. By the way, a too-tight lock can also cause the rear HG to bind up. If the lock is OK, then check your rear sight; try adjusting the aperture to max elevation, then push down on the aperture with your thumb. If it slides down under light to moderate pressure, that could be the problem - the aperture could be shifting slightly after each shot fired. Next, check the tension of the sight cover; ideally, it'd be nice and tight. If it's loose, it could allow some play to creep into the rear sight assembly.</p><p></p><p>Try all those first before removing the rear HG, as that's a delicate procedure; do it wrong, and the HG can crack or even split into two. Let us know what you find out!</p></blockquote><p></p>
[QUOTE="Perplexed, post: 2350676, member: 7157"] First, try moving the rear hand guard back and forth (along the barrel) with everything installed. If you can slide it about the thickness of a credit card, there's enough play and you'd move on to other causes for the stringing. In this case, check the tightness of the gas cylinder lock - ideally, you'd be able to spin it onto the barrel and get close to "finger tight", then back off enough that you can install the gas lock screw. You do NOT want to force the gas lock tighter until it lines up with the gas cylinder, because that can cause vertical stringing. It's actually preferable for the lock to be a bit loose than a bit tight. By the way, a too-tight lock can also cause the rear HG to bind up. If the lock is OK, then check your rear sight; try adjusting the aperture to max elevation, then push down on the aperture with your thumb. If it slides down under light to moderate pressure, that could be the problem - the aperture could be shifting slightly after each shot fired. Next, check the tension of the sight cover; ideally, it'd be nice and tight. If it's loose, it could allow some play to creep into the rear sight assembly. Try all those first before removing the rear HG, as that's a delicate procedure; do it wrong, and the HG can crack or even split into two. Let us know what you find out! [/QUOTE]
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my garand at the range
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