This addon includes fixed HUD icons for HK MP5 and SPAS-12 shotgun from Half-Life, and now it also supports Opposing Force and Blue Shift (edited by myself). No more incorrect weapon sprites in classic Half-Life PC games!
Original sprite fix made by QuakerCraft: Gamebanana.com
P. S. I don't have files for Half-Life: Decay, so it's not included there. Maybe in the future.