const XO_CArmoury = 4 //diff windows/linux
const m_iType = 34 // armoury_entity index( see above enum )
const m_iCount = 35// hold the number of weapons that the armoury_entity will have 

#include <hamsandwich>
#include <cstrike>

//Hook as pre
RegisterHam(Ham_Touch, "armoury_entity", "CBaseEntity_Touch", false)

public CBaseEntity_Touch( iTouched, iToucher )
{
        //iTouched is the armoury_entity that is touched
        //iToucher is the entity index that touch the armoury_entity. It is not 100% a player, you need to check it's classname or use engine's register_touch with allow you to specify the toucher class too.
    new armouryIndex = cs_get_armoury_type(iTouched)
        //If you need to block return HAM_SUPERCEDE
        //If you need to block just for one weapon check if armouryIndex is what you want and supercede
       //cs_get_armoury_type return CSW_ indexs and not the one from the above list.
}

enum
{
    ARM_MP5, //0
    ARM_TMP,
    ARM_P90,
    ARM_MAC10,
    ARM_AK47,
    ARM_SG552,
    ARM_M4A1,
    ARM_AUG,
    ARM_SCOUT,
    ARM_G3SG1,
    ARM_AWP,
    ARM_M3,
    ARM_XM1014,
    ARM_M249,
    ARM_FLASHBANG,
    ARM_HEGRENADE,
    ARM_KEVLAR,
    ARM_ASSAULT,
    ARM_SMOKEGRENADE //18
}

stock CreateArmouryEntity( itemType, itemCount, Float: fOrigin[ ] )
{
    new armouryEnt = create_entity("armoury_entity")
    if(!armouryEnt)
    {
        return -1
    }
    
    if(itemType < ARM_MP5 || itemType > ARM_SMOKEGRENADE)
    {
        return -1
    }
    
    set_pev(armouryEnt, pev_origin, fOrigin)
    set_pdata_int(armouryEnt, m_iType, itemType, XO_CArmoury)
    set_pdata_int(armouryEnt, m_iCount, itemCount, XO_CArmoury)
    dllfunc(DLLFunc_Spawn, armouryEnt)
    return armouryEnt
}

new armouryEnt = -1
while((armouryEnt = find_ent_by_class(armouryEnt, "armoury_entity"))
{
    remove_entity(armouryEnt)
}