// The entry pickup
new AmmuPickupEntry;

// The exit pickup
new AmmuPickupExit;

public OnGameModeInit() {
    // 1318 is the pickup model ID, followed by the coordinates in the world
    AmmuPickupEntry = CreatePickup(1318, 1, 1367.8782, -1279.7295, 13.5469);

    // And this is the exit pickup that exists inside the store
    AmmuPickupExit = CreatePickup(1318, 1, 285.3757, -41.3928, 1001.5156);
}

You'll need to go to OnPlayerPickUpPickUp
}
	if(pickupid == ammupickupentry)//LS Enter ammu market the pickup that we've created
 	{
 	    SetPlayerPos(playerid, 286.1017,-41.8042, 1001.5156);// if the player stand on it he gets teleported to ammu coord
 	    SetPlayerInterior ( playerid, 1 );// and we set him into ammu-natioin id you can get both of this in http://weedarr.wikidot.com/interior
 	}
 	if(pickupid == ammuoutpickupexit)//LS exit ammu market the exit pickup that we've created 
 	{
 	    SetPlayerPos(playerid, 1364.8909,-1279.5602,13.5469);// if the player stand on it he gets teleported to out of ammu you can teleport him the place that you want by /save <text> 
 	    SetPlayerInterior (playerid, 0);// here we get the player out of interior by setting his interior to 0
 	}

We will have to add
new ammuCP;// you can add it before ongamemodeinit
Now we go to the ammu-nation type /save in the place that we want to put the Checkpoint
After that we go to OnGamodeinit
ammuCP= CreateDynamicCP(296.6336,-38.0615,1001.5156,2,-1,-1,-1);// now we've created the cp Just put your X,y,z dont touch anything else
After that go to your dialog defines!
type
#Define DIALOG_AMMU 788// if you have this in your gamemode so change it to another id
After that go to OnPlayerEnterDynamicCP
}
	if(checkpointid == ammuCP)// now we will create what happens if player enter this checkpoint dialog will appear i've just added few Weapons you can add what you want
	{
		format(str, 956, "Sawn-off\nCombat Shotgun.nMicro SMG\nMP5\nAK47\nM4\nTec9\nSniper Rifle\nDetonator\nDesert Eagle\nBody Armour\nMinigun\n");
 		ShowPlayerDialog(playerid, DIALOG_AMMU, DIALOG_STYLE_LIST, "{FF0000}Ammu-Nation", str, "Confirm", ".: Close :.");
 	}
The Pickups is done also the Checkpoint also the Dialog

if(dialogid == DIALOG_AMMU)
	{
	    if(response)
	    {
	        if(listitem == 0)// Sawn-off
			{
			    if(GetPlayerMoney(playerid) < 12000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");// We will check if the player have 12k to buy sawn-off if he dont have, we will send him message! that he cant buy it
   				GivePlayerWeapon(playerid, 26, 100);// this function is used to giveplayerweapon(playerid, 26 is the weapon id, 100 is the ammo
       			GivePlayerMoney(playerid, -12000);// now we will take from the player 12k
          		GameTextForPlayer(playerid,"~r~-12000~g~$",5000,1);// this is a gametext for player will appear when he buy sawn-off
   				SendClientMessage(playerid, 0x22B998AA,"You Bought Weapon: Sawnoff Shotgun");//a message will appear

			}
			if(listitem == 1)//Combat Shotgun
			{
			    if(GetPlayerMoney(playerid) < 10000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");
   				GivePlayerWeapon(playerid, 27, 50);
       			GivePlayerMoney(playerid, -10000);
          		GameTextForPlayer(playerid,"~r~-10000~g~$",5000,1);
   				SendClientMessage(playerid, 0x22B998AA,"You Bought Weapon: Combat Shotgun");
   			}
   			if(listitem == 2)//Micro SMG
   			{
   			    if(GetPlayerMoney(playerid) < 6000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");
   				GivePlayerWeapon(playerid, 28, 400);
       			GivePlayerMoney(playerid, -6000);
          		GameTextForPlayer(playerid,"~r~-6000~g~$",5000,1);
   				SendClientMessage(playerid, 0x22B998AA,"You Bought Weapon: Micro SMG");
   			}
   			if(listitem == 3)//MP5
   			{
   			    if(GetPlayerMoney(playerid) < 15000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");
   				GivePlayerWeapon(playerid, 29, 300);
       			GivePlayerMoney(playerid, -15000);
          		GameTextForPlayer(playerid,"~r~-15000~g~$",5000,1);
   				SendClientMessage(playerid, 0x22B998AA,"You Bought Weapon: MP5");
			}
			if(listitem == 4)// M4
			{
                if(GetPlayerMoney(playerid) < 20000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");
   				GivePlayerWeapon(playerid, 30, 600);
       			GivePlayerMoney(playerid, -20000);
          		GameTextForPlayer(playerid,"~r~-20000~g~$",5000,1);
   				SendClientMessage(playerid, 0x22B998AA,"You Bought Weapon: M4");
   			}
   			if(listitem == 5)//tec9
   			{
   			    if(GetPlayerMoney(playerid) < 4000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");
   				GivePlayerWeapon(playerid, 32, 500);
       			GivePlayerMoney(playerid, -4000);
          		GameTextForPlayer(playerid,"~r~-4000~g~$",5000,1);
   				SendClientMessage(playerid, 0x22B998AA,"You Bought Weapon: Tec9");
			}
			if(listitem == 6)//Sniper Rifle
			{
			    if(GetPlayerMoney(playerid) < 15000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");
   				GivePlayerWeapon(playerid, 34, 100);
       			GivePlayerMoney(playerid, -15000);
          		GameTextForPlayer(playerid,"~r~-15000~g~$",5000,1);
   				SendClientMessage(playerid, 0x22B998AA,"You Bought Weapon: Sniper Rifle");
   			}
   			if(listitem == 7)//Detonator
   			{
   			    if(GetPlayerMoney(playerid) < 25000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");
   				GivePlayerWeapon(playerid, 40, 5);
       			GivePlayerMoney(playerid, -25000);
          		GameTextForPlayer(playerid,"~r~-25000~g~$",5000,1);
   				SendClientMessage(playerid, 0x22B998AA,"You Bought Weapon: Detonator");
 			}
   			if(listitem == 8)//Desert eagle
   			{
   			    if(GetPlayerMoney(playerid) < 20000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");
   				GivePlayerWeapon(playerid, 24, 300);
       			GivePlayerMoney(playerid, -20000);
          		GameTextForPlayer(playerid,"~r~-25000~g~$",5000,1);
   				SendClientMessage(playerid, 0x22B998AA,"You Bought Weapon: Desert Eagle");
			}
			if(listitem == 9)//body armour
			{
   				if(GetPlayerMoney(playerid) < 2000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");
   				SetPlayerArmour(playerid, 100);
				GameTextForPlayer(playerid,"~r~-2000~g~$",5000,1);
				SendClientMessage(playerid, 0x22B998AA,"You Bought: Body Armour");
			}
			if(listitem == 10)//Minigun
			{
			    if(GetPlayerMoney(playerid) < 150000) return SendClientMessage(playerid, COLOR_RED, "Error: {FFFFFF} You don't have enough money!");
   				GivePlayerWeapon(playerid, 38, 20);
       			GivePlayerMoney(playerid, -150000);
          		GameTextForPlayer(playerid,"~r~-150000~g~$",5000,1);
   				SendClientMessage(playerid, 0x22B998AA,"You Bought Weapon: Minigun");
				return 1;
			}
		}
	}

/* pls
comment
me*/