The Patriot Mag Release (PMR) requires disassembly of the firearm action in order to release the magazine. This is what you need for your California legal builds that you want to retain “evil features” on. This model works only for 5.56mm sized lowers and not AR10 sized lowers.
The non-Kit version does not include an extended take down pin and super tacticool piece of black paracord. You want the kit model for $5 more you poser. Do you even operate?