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The Range
Rifle & Shotgun Discussion
Different AR-15 problem
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<blockquote data-quote="technetium-99m" data-source="post: 984283" data-attributes="member: 3615"><p>There is a detent and spring held into the lower by the butstock, or the small plate (can't think of it's name) that's held in place by the castle nut. This detent rides in the slot in the rear takedown pin and prevents it from sliding freely. It probably dropped out when you took off the butstock. You should have the buffer retainer and spring as well, which tend to be launched out upon buffer tube removal. Depending on the pen, either spring could be your "extra" but I think it's the one holding the detent against the rear takedown pin (note that pen and pin are different here, just trying to be difficult).</p><p></p><p>There are videos on youtube and arfcom about assembling lowers, give one a watch and you'll see how it all goes together.</p><p></p><p>As far as your problem, check and make sure the spring and buffer slide freely in the tube and that your carrier slides freely in the upper. It's got to be catching on something if it will only move 1/2 of the way to the rear.</p></blockquote><p></p>
[QUOTE="technetium-99m, post: 984283, member: 3615"] There is a detent and spring held into the lower by the butstock, or the small plate (can't think of it's name) that's held in place by the castle nut. This detent rides in the slot in the rear takedown pin and prevents it from sliding freely. It probably dropped out when you took off the butstock. You should have the buffer retainer and spring as well, which tend to be launched out upon buffer tube removal. Depending on the pen, either spring could be your "extra" but I think it's the one holding the detent against the rear takedown pin (note that pen and pin are different here, just trying to be difficult). There are videos on youtube and arfcom about assembling lowers, give one a watch and you'll see how it all goes together. As far as your problem, check and make sure the spring and buffer slide freely in the tube and that your carrier slides freely in the upper. It's got to be catching on something if it will only move 1/2 of the way to the rear. [/QUOTE]
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Different AR-15 problem
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