[rbN.]

Top of your script:

pawn Код:

new SpamProtection[MAX_PLAYERS];

OnPlayerConnect:

pawn Код:

SpamProtection[playerid] = 0;

At every weapon command:

pawn Код:

SpamProtection++;
if(SpamProtection == 3) return // ----> (SetTimerEx here, or what ever you want)

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If you want it my way:

OnGameModeInit:

pawn Код:

SetTimer("NoSpam",20000,1);

Somewhere down your script:

pawn Код:

forward NoSpam();

public NoSpam()
{
    for(new i = 0; i < MAX_PLAYERS; i ++)
    {
        if(IsPlayerConnected(i))
        {
        
            if(SpamProtection[i] > 0)
            {
                SpamProtection[i] = 0;
            }
            
        }
    }
}

At every weapon command:

pawn Код:

SpamProtection++;
if(SpamProtection == 3) return SendClientMessage(playerid, COLOR_GREEN, "SERVER: Hey, wait a few seconds, spammy boi C:");

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For the weapon thingy, if you want to make it smaller, use dialogs or strtok/tmp .