I'm looking to do a 10.5 build around the basis of pinning and welding a Griffin Armament Spartan 3 can(designed for just this reason) to a 10.5 upper for a 1 stamp gun. The barrel will be a HBAR as it'll be 16.1 inches for a rifle build. I'm wondering if I Should go the piston route or DI with an adjustable gas block and a gemtech or comparable supressor made bcg for this build. Thoughts and advice would be welcome.