So barrel length and overall length are not a mitigating Factor with a 10/22? Let's just say this is a Tapco stock unaltered without the tubeIt's not a pistol, it's not a rifle because it's not intended to be fired from the shoulder and has no shoulder stock. IMO what you would theoretically be doing would be converting or building a "firearm" and I haven't ever seen where it's illegal to convert something into the proper classification of "firearm" some people refer to as "other" like PGO shotguns.