New stuff: - New models and textures - Added barrel, sight, and stocks based on the SACO M683 (an American-made copy of the Uru) - Added iron sights and stocks based on the Uru II prototype
Changes: - Replaced the "experimental suppressor" loading screen with a "different attachments" one - Renamed some attachments for consistency purposes - Tweaked some values for the already-existing sights and stocks to have a more smooth progression between the different attachments
