The latest installment of Modern Warfare 3 features a wide variety of weapons and killstreaks for players to master. The weapon arsenal includes assault rifles, SMGs, sniper rifles, shotguns, pistols, and melee weapons, each with unique unlock requirements tied to player progression and challenges. Weapons like the M16, AK-47, and Intervention are iconic choices across different modes. Players can also unlock killstreaks, ranging from UAVs for map awareness to powerful tools like the Chopper Gunner and the devastating Juggernaut suit. Each killstreak has specific point requirements, rewarding players for consistent performance in matches.