STI International slides are CNC milled from pre-hardened barstock 4140 carbon steel to ensure slide rail exactness. The breech face is wire EDM cut for maximum precision angle. Available in either 5″ (Government). The slides have lowered and flared ejection ports for reliable case ejection. STI slides fit both 1911 and 2011 frames. 355 is compatible with 9mm, 38 Super and similar cartridges.