How To Play:
Cross fire M4a1 Thunder is most adventure shooting game. CrossFire M4A1 Thunder Undead Version. Heroic weapon M4A1 Thunder God, with silver gun body and blue light, reveals its noble style. Its merits include cool blue muzzle flame, excellent rate, large and super fast cartridge (just 1.60 seconds). So what are you waiting for? Pick it up now to show your marksmanship and eliminate all the terrorists!