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The Range
Gunsmithing & Repairs
AR Roll Pin Size Question
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<blockquote data-quote="p238shooter" data-source="post: 2954480" data-attributes="member: 24583"><p>Traded for a little used AR-15 a while back, just now had time to shoot it. Performs great in every way I expected except the trigger pivot roll pin started backing out on one side after 30-40 rounds. It is lightly snug, but a little looser than normal to stay in place.</p><p></p><p>It has an Anderson AM-15 lower, unknown trigger. The roll pin seems to be .154 inch the best I can measure it on both ends without disassembly.</p><p></p><p>Is this the normal size for the trigger roll pin or do I have one smaller than expected? </p><p></p><p>If this pin is the right size, do I need to clean the oil off and apply something like Vibra-Tite, or try to expand each side a little with a punch? Kinda hate to try the punch thing if I do not have to.</p><p></p><p>Thanks.</p></blockquote><p></p>
[QUOTE="p238shooter, post: 2954480, member: 24583"] Traded for a little used AR-15 a while back, just now had time to shoot it. Performs great in every way I expected except the trigger pivot roll pin started backing out on one side after 30-40 rounds. It is lightly snug, but a little looser than normal to stay in place. It has an Anderson AM-15 lower, unknown trigger. The roll pin seems to be .154 inch the best I can measure it on both ends without disassembly. Is this the normal size for the trigger roll pin or do I have one smaller than expected? If this pin is the right size, do I need to clean the oil off and apply something like Vibra-Tite, or try to expand each side a little with a punch? Kinda hate to try the punch thing if I do not have to. Thanks. [/QUOTE]
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