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Originally Posted by
yeahbuddy289
Jstone sorry for the delayed response brother.... Yes it was already head spaced and the hole for the pin was already drilled. However, you have to press the barrel out of the trunion in order to rivet it to the receiver (unless you plan on doing a screw build or a weld build). I made the mistake of not pushing the barrel back in all the way, so when I pressed the pin in, it egged out the groove in the barrel so my head spacing was too loose. I had to buy a set of gauges and re head space it, drill a bigger hole, then get a bigger pin.