You may need to check your state laws.

To my knowledge, the M1 carbine was never banned in the US and was perfectly legal even while the Brady Bill was in effect, unless post-ban magazines of greater than 10 rounds were involved.

Naturally, new M1 carbines (I think Auto Ordnance still makes a model) didn't have bayonet lugs and such and came with only 10-round or lesser mags. But I don't believe federal law ever banned the M1 carbine.

California law, however, may be a whole different ball of wax.