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No. is there a way to do it besides a gunsmith?
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Sure. It's quick and quite simple, but requires a couple of specialized tools and a bit of disassembly. Since there's no milspec "Field" gauge for the M1 Carbine, you'll need a gauge as close to the milspec "No-Go" gauge as possible: 1.302 inches. The commercial Forster "Field" gauge is 1.299 inches, ever so slightly longer than Clymer's 1.297 inches. You don't need a "Go" gauge, since you already know it chambers factory ammo (typically 1.280 inches, BTW).
While you
can do the necessary disassembly / reassembly of the bolt without the bolt tool, using one makes your life a whole lot easier.
Before you throw up your hands and think, "Screw it, I'll just take it to a gunsmith", the odds are that he doesn't have the proper gauge or the bolt disassembly tool either, so he'll half-ass the job, charge you money, and you still won't know.
Forster Field gaugeBolt disassembly tool