Ok. This has my full attention. Beautiful gun. It appears you went with the rifle length gas system over the carbine (shorter gas & barrell) length. Any reason?

Southern Michigan now allows straight walled rifle usage in the limited zone (old shotgun only zone). Since straight wall only, the .458 SOCOM is out. I am building a lower for a 450 bushmaster, but have conflicting information on the buffer and spring. Some say heavy to hydraulic buffer, some want the spring upgraded to strong, some say it runs fine on standard everything, etc.... Wanted your experience.