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The Range
Gunsmithing & Repairs
ar15 upper issues
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<blockquote data-quote="Shootin 4 Fun" data-source="post: 2708620" data-attributes="member: 6465"><p>Your forward assist may be rotating as you install the pin. Once you get the roll pin in far enough to keep the f/a from popping out take a look and make sure that it's straight.</p><p></p><p>Gas block, a lot of manufacturers have tightened up their tolerances and those things can be a cast iron ***** to install. You may have to sand some of the finish off of the inside of the block.</p></blockquote><p></p>
[QUOTE="Shootin 4 Fun, post: 2708620, member: 6465"] Your forward assist may be rotating as you install the pin. Once you get the roll pin in far enough to keep the f/a from popping out take a look and make sure that it's straight. Gas block, a lot of manufacturers have tightened up their tolerances and those things can be a cast iron ***** to install. You may have to sand some of the finish off of the inside of the block. [/QUOTE]
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