Evike Angel Custom G2 SUS304 Stainless Steel 6.01mm GBB Tight-bore Inner Barrel WE SOCOM MARUI KJW 1911 TM HICAPA M9 3.8in 4.3in 5.16in Hicapa Material: High Quality 100% Pure SUS304 Stainless Steel Inner Diameter: 6.01mm