You can pick weapon from the ground with using +use like you do in CS:GO
For English;
new const szWeaponNames[WeaponIdType:MAX_WEAPONS][] = {
"", "228 Compact", "", "SSG 08", "He Grenade", "XM1014", "Explosive C4", "MAC-10", "AUG",
"Smoke Grenade", "Dual Berettas", "Five-SeveN"...