Have narrowed it down. Spikes lower. I want to take the stock off, leave the 6 position buffer tube and put a pad over it from Ace stocks. Possible? Good idea? Is a milspec or civilian buffer tube lighter? Spikes L/W 14.5 upper with perm flash hider to make 16" overall. Edit*- just saw that there is no 14.5 " upper on spikes website. I though they made one. I will look into other companies I guess. With this set up, will the rifle be complient with the 26" overall rifle lenght law? And as yall might remember. I'm trying to make the rifle as light as possible and still be compliant with state/federal laws. Sorry if these are stupid/newb questions. I am somewhat new to Ar rifles.