2 years ago when i first got into guns, i talked to a Los Angeles ATF agent and a supervisor of firearms at CA DOJ about legality and if they see any issues with me dropping in an unmodified .22 action/barrel into an "airsoft stock." they said it was fine and saw no issues. they both said to follow CA state/federal law and class 3/ title II to make sure theyre not full auto, not suppressed, no SBR, and OAL over 26". done deal and off i went. yep the receiver that has the serial number on it is the actual firearm that the ATF/DOJ cares about - not the chassis. btw. there are plenty of gun owners that were doing these 7-8 years ago before i got into this. maybe thats why you see the aftermarket SCAR, MP5, G36, STG44, AR15 clones out there via Archangel, ISSC, Umarex, GSG, etc.
its legal to drop in a complete .22LR rifle into a chassis whether its made of plastic, metal, wood, etc. these gutted airsoft bodies are no different since theyre just made in cheaper plastic and metal. its just the closest 1:1 scaled replica. there arent that many aftermarket manufacturers who make centerfire clones so i just took it in my own hands just using a dremel, power drill and a table vice. it takes me about 5-10 minutes to dissassemble a chassis and drop the .22LR into another one. so i can play dress up every month with a new host.
Barrett/Cheytac mags are just hollowed out and i just use them as a shroud to cover the 22 magazines. its just to complete the "look" and has no real functionality.
correct. if i were to sell these, i would need an FFL to gunsmith these. its my own personal collection and for my son to inherit/play with when he gets older to shoot with us.
i went through a normal DROS process with an FFL but none of my rifles are registered.