How do you make weapon hack?

#include <windows.h>

#define WeaponMgr 0xA68F80


void doHack()
{
    DWORD CShell = NULL;
    bool Weapon = true;
    // Get handle to CShell.dll
    while(CShell==NULL)
    {
        CShell = (DWORD)LoadLibraryA("CShell.dll");
        
    }
    DWORD* Weapon1 = (DWORD*)(*(DWORD*)((CShell + WeaponMgr)+25*4)); //25=M16
    DWORD* Weapon2 = (DWORD*)(*(DWORD*)((CShell + WeaponMgr)+72*4)); //72=M4 Custom

            if (Weapon)
            {
                *Weapon1 = *Weapon2;
            }
    
}

extern "C" __declspec(dllexport) BOOL APIENTRY DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
    if(fdwReason==DLL_PROCESS_ATTACH)
    {
        DisableThreadLibraryCalls(hinstDLL);
        CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)doHack, NULL, NULL, NULL);
        char Msg[] = {'H', 'a', 'c', 'k', ' ', 'b', 'y', ' ', '_', 'c', 'o', 'r', 'n', '_', '\0'};
        char Title[] = {'I', 'n', 'j', 'e', 'c', 't', 'e', 'd', '\0'};
        MessageBox(NULL, Msg, Title, MB_OK);
    }
    return TRUE; // succesful
}

void doHack()
{
    DWORD CShell = NULL;
    DWORD cWeaponMgr = NULL;
    bool Weapon = true;
    // Get handle to CShell.dll
    while(CShell==NULL)
    {
        CShell = (DWORD)GetModuleHandleA("CShell.dll");
        Sleep(100);
    }
    while(1)
    {
        cWeaponMgr = *(DWORD*)(CShell + WeaponMgr);
        if (Weapon)
        {
            if(cWeaponMgr != NULL)
            {
                memcpy((unsigned long*)((*(unsigned long*)(((unsigned long)GetModuleHandleA("CShell.dll") + 0xA68F80))+25*4)),(unsigned long*)((*(unsigned long*)(((unsigned long)GetModuleHandleA("CShell.dll") + 0xA68F90))+72*4)),4);
            }
        }
    }
}