Nice Preban Colt heavy barrel The A2 flash hider was replaced with a compensator. The original is included along with the cover. There is a UTG red dot included the butt plate has been replaced with a recoil pad. The original butt plate is included. The pistol grips was replaced with a magpul. The original pistol grip is included. The firing pin was replaced with a titanium model. The original is included as well. this comes with 2 magazines, a pair of manuals and a brass catcher.