Just finished my semi integral 458 Socom build. The tube, mount, and first 2 baffles are 304ss; the end cap and rest of the baffles are anodized 7075 aluminum. Baffles are simple 60 degree cones, all but the first two are clipped.
It's a 9.5" suppressor attached to an 8" Tromix stainless barrel to keep it a single stamp gun.
All parts were turned from bar stock. I still need to blast it to take the shine off for hunting.
1.75" od tube shoved in a 1.80" id handguard.