pdata = private data. Key 43 (or m_iId) will return weapon id in CSW_ format.
@FromTheFuture: Next time, don't hard coded key. Write something like:
PHP Code:
#define m_iId 43
#define OFFSET_LINUX_WEAPON 4
new iWpn = get_pdata_int(ent, m_iId, OFFSET_LINUX_WEAPON)