What is an Off List Lower (OLL)?
An Off List Lower (OLL) is a part of a semiautomatic centerfire rifle which is NOT listed by name as a California ‘assault weapon’. A common example is a lower receiver for an AR-15 type rifle. Such parts may be bought and sold, and carefully assembled into rifles to avoid manufacturing an ’assault weapon’ by combination of features. The part of California Penal Code which allowed more ‘assault weapons’ to be added to the list was repealed, effective 2007.
