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What ultimately STOPS the foreward movement of the op rod / bolt assembly as it rushes back to battery ?
Is it actually the piston which then gets hammered into the end of the gas plug ? If so, seems like one whole hell a lot of chaos, peening punishment to the business end of the stick.
 

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If you use a GI combo tool, it's hard to put too much torque on that gas plug. Mine started loosening up pretty and I replaced it with a GI one and it hasn't happened since. Look closely; the GI plug has a raised diamond knurl.

Ty
 

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blusteel said:
What ultimately STOPS the foreward movement of the op rod / bolt assembly as it rushes back to battery ?
Is it actually the piston which then gets hammered into the end of the gas plug ? .
Yes that is how it is supposed to work. And no it does not hurt anything.

Read this,

http://www.ambackforum.com/viewtopic.php?t=32141
 
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