Yes it can be done but i think you would be better off finding a prefit in the caliber of your choice. By the time you pay someone to ream a old factory barrel you could have a shillen or criterion for 300ish or a er shaw for less if we are trying to stay on a budget.

Barrel swaps are no big deal. Only a few simple tools and some time learning how to do it.

Btw. If your la has the extended bolt stop/baffle that will need replaced. They are only a few dallars from midway or brownells

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