Getting a quality, short-barreled rifle in California may seem like a hassle. It requires no shortage of time and patience and a lot of extra NFA paperwork. Rather than have to deal with all of the extra paperwork and hope that you can actually find an option that works, it can help to find something that has been prescreened for your area. The PWS MK110-California 223 Rem / 5.56 NATO 10.75″ Pistol Triad Handgun is an excellent option, offering rifle-performance from a handgun-style platform.
Chambered to take either .223 or 5.56 ammunition, the 10.75” barrel may not be very long but it still offers accuracy out to 300 meters. The included Sig Arm Brace should help shooters to use this weapon one-handed, though two-hands can also be employed to offer superior control. The Triad 556 muzzle device goes a step forward in this control, offering a reduced muzzle flash and better control on follow-up shots. Like all PWS options, it includes an ergonomic grip profile and enhanced buffer tube for the best possible control.
If you want the performance of a trusted tactical rifle in a pistol-style package that you can use in California, then this is the way to go.