by Shooting Illustrated Staff posted on October 31, 2010 Guns Support NRA Shooting Illustrated DONATE ** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** STI Tactical 4.15 In this article .45 ACP, self-defense, semi-auto handguns, STI Related Stories STI Sentinel Premier Gallery Detonics Combat Master Evolution Gallery Kimber Custon Crimson Carry II Gallery Regent .45 ACP 1911 Gallery K2 Semi-Auto Pistol imported by EAA Gallery Most Popular First Look: Glock Gen6 Pistols Comfortable and Reliable Revolver Carry Top 5 'Budget-Priced' .50 BMG Rifles Shotguns: How to Reload I Carry: Smith & Wesson Bodyguard 2.0 Pistol in a PHLster Holster Ammo: What is a Lot Number?