force-single-mode-multiple_reddit.sqf

// init.sqf
["weaponMode", {
    params ["_unit", "_newWeaponMode", "_oldWeaponMode"];
    private _weapon = currentMuzzle _unit;

    if (_newWeaponMode != "Single") then {
        private _weapons = ["arifle_MX_F", "hlc_rifle_CQBR"];

        private _cfgWeapons = configFile >> "CfgWeapons";
        if (_weapons findIf {_weapon isKindOf [_x, _cfgWeapons]} != -1) then {
            [_unit, _weapon, "Single"] call CBA_fnc_selectWeapon;
        };
    };
}, true] call CBA_fnc_addPlayerEventHandler;