Hello everyone, new guy here with a few questions! First off i guess i should introduce myself, my names James im a 25 year old pre-vet (Veterinarian) college student in the unfortunately, liberal/democrat and illegal immigrant infested state of California (Can't wait to get out of here for vet school!!). I'm sure you all understand where i am coming from on that one. Anyways, i am a huge handgun enthusiast (mostly Sig Sauer), but recently had the chance to shoot a few AR's and Ak's and am now interested in building my own AR15 from scratch as a father/son project with my Dad. Does anyone have tips or recommendations on CA Neutered (Legal) and well built lowers/uppers etc. I was looking into the Stag Lowers, and Rock River Arms, but really have no experience in this field. I understand that i will need a bullet button and ten round mag lock? I would much appreciate any information or help!! Thank you guys, and God Bless!