These are general airsoft rules that commonly apply around the world, but keep in mind that each events and teams have their own variations. So CHECK them always in advance. These rules are for REFERENCE purposes ONLY.
1. Muzzle velocity limit: Check in advance and follow the local FPS/m/s limit. No ‘hot guns’ are allowed.
2. Protective goggles: Always wear your protective goggles to protect your eyes and face from BB hits. WARNING: do not take goggles off even in the “safe-zone” area. Accidental discharges, ricochets and stray shots are a REAL POSSIBILITY.
3. Treat airsofts as real guns: Safety first! Consider your airsoft gun as real gun in terms of safety. Keep the safety on at all times, put muzzle protector on while off the game, keep your finger off from the trigger and don’t carry your gun in public. The reason is simple. You can bet that the other people will think it’s real gun and most likely you will end up in major mess. WARNING: Do not shoot the gun in safe-zone area or at boundaries of gaming field. If you need to test your gun ask event leader the correct location for it.
4. Hits and Honor code: Hit is always a hit. Get off the game by yelling “HIT!” and raise your arms above your head. Your job is to go back to safe-zone with minimal disturbance to remaining players. Honor code: Since in airsoft it is relatively easy to cheat about hits, honor code is extremely important. Cheaters will be caught eventually as the reputation goes around and results are predictable. Failure to follow the honor code will result in expulsion from the game as well as ban from future games. Don’t expect to be invited to any more games. NOTE: There will be disagreement situations of whether or not somebody was hit. While you are running and/or wearing heavy equipment it might become impossible to notice hits to e.g. backpack or tactical vest. Take the note of the situation before you start pointing fingers. Ricochets or gun hits are not counted.
5. Code of conduct: Watch your behavior. No one likes player who is abusive, drunk, ignores team orders, etc. Do not bring illegal drugs or real weaponry. Alcohol use before or during the game is prohibited. Ignoring code of conduct will most likely result getting your ass kicked and thrown out of the game.
6. Elimination: Go to designated zone for eliminated players while letting others know that you are out of the game by holding your hands high and keeping your gun over your head or sling across your back.
7. Dead men don’t speak: After being eliminated return to your safe-zone and don’t speak to your teammates who are still in the game.
8. No physical contact: You are not allowed to grab, hold or otherwise obstruct other players. No hand-to-hand combat here! Read below how to operate in extreme close ranges.
9. “Knife Kill”/ “Silent Kill” / ”Safety Kill” / Surrender: In extreme close ranges different means of elimination must be used. This rule varies from the field and event, but generally it is applied by light touch of muzzle end to the opposing player. This is effective means when the enemy has not noticed your approach. Do not use this method if the enemy has already noticed you or if the targeted player is moving rapidly. If YOU are subjected to this elimination method, do not yell loudly that you have been hit, but quietly acknowledge the elimination to opposing player and then follow the rules on points no. 6 and 7. Close range – force to surrender: If you are in position of less than 30 foot of enemy player you can try to force them into surrender by yelling i.e. “Surrender!”. This is good idea for the guy staring at the end of your barrel, ‘cause upgraded guns can cause minor injuries from close ranges. Check local rules since often this rule is not known!
10. No real weapons: Don’t bring any type of real firearms, ammunition or knives to the game.
11. No unauthorized BBs: Do not use BBs that are unauthorized. Common types of BBs that are prohibited are metal and exploding BBs. In some fields only BIO BBs are allowed.
12. Obtain permit for your game area: Don’t play in unauthorized areas. Sooner or later somebody will mistake you for bad guys and major mess will occur. Good idea is to inform local police of your activity BEFOREHAND. If you know there is some other traffic besides of your own guys, put some signs that the area is used for shooting game, etc.
13. Stay inside the area: Do not wander outside of the designated gaming area.
14. Rules of Engagement: A. do not shoot players on your side, check identification first (typically arm band of specific color). B. Chances are that outsider might enter your gaming area purely by accident. If you are not sure of your target, hold your fire. If you see civilians wandering in the gaming area yell to stop the game. If you see a player without proper eye protection cease fire immediately and call for game to be stopped.
note : taken from RENEGADERECON