Off List Lowers (OLL/OLR)
What does OLL mean?
When the members of Calguns.net started the OLL revolution, the initial semiautomatic firearms that were imported into California and sold were unlisted AR type lower receivers. The three letter accronym OLL - for Off List Lower - was quickly adopted by both the pro gun community and the California Department of Justice and the anti-gun community. OLL has now become synonymous with the import, sale, manufacture and assembly of firearms that were once considered "Assault Weapons" under California law and therefor unobtainable.
Aren't "series" semiautomatic rifles regulated?
Harrot v. County of Kings (PDF, 93K) was a California Supreme Court case that held essentially that a semiautomatic centerfire rifle could not be considered an Assault Weapon unless it had been specifically identified in section 12276 of the Penal Code, the California Code of Regulations, or the so called Kasler list as promulgated by the California Attorney General. Further the rifle had to be identified by the Attorney General by both make and model. Harrot judicially moots the "series" language in Penal Code 12276 (a)(1), 12276 (a)(5), and 12276 (e).
California also regulates semiautomatic rifles by features in Penal Code 12276.1 Generally, the Penal Code prohibits a semiautomatic rifle from having a detachable magazine and any one of a pistol grip, folding or telescoping stock, flash hider, forward pistol grip, or grenade launcher.