I'm Gonna set up my M1A squad scout to be an MK14 mod 0 clone. I know most of what I need except for the SEI front end. The Vortex is simple but which direct connect gas lock and front sight base for the 18" bbl. The SEI web sight isn't all that specific re this set up. If anyone here has a reasonable awnser I will go with that . Otherwise I'm gonna have to call SEI and find out.