.223/5.56 to .22lr conversion

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I’m looking into it. One step at a time. My son pointed me toward a sale on Black Dog mags. I have a 10.5 barrel and upper that I can put on my SBR. Now all I need is the kit.

I’ve been told, but can’t confirm it, that after shooting .22 bullets in an AR barrel for an extended period of time, accumulated lead will block the gas hole on top of the barrel and cause problems if you ever go back to shooting .223/5.56 in the barrel again.

Anyone have any information about this?
 

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