1. Is a 10" barrel (for an AR 15) legally transferable to someone in California (from someone in Oregon), without going through an FFL? (Hint: I am pretty sure I know the answer) 2. Is a 10" barrel allowed on an AR 15 PISTOL in California? 3. And most relevant to this scenario... Why would a resident of California ask a resident of Oregon to accept shipping of a 10" barrel for an AR 15, and say that it "cannot be sent to California because it is illegal there?" Any one know #1 & #2, or have a guess for #3? (On #1, I do not think it matters if the Californian can legally own a firearm, since a barrel isn't a firearm.) I would love to get as many opinions as I could... Thanks firearms enthusiasts!!!