GSP EXPERT Attention! Absolutely follow the additional information provided in the GSP instruction manual! (Especially the comments on the use of weapons) Please make a special note in regards to the GSP EXPERT / USA variation (which is provided with a safety lever). When disassembling the weapon, the installation pin marked in red has to be removed before the trigger system can be taken out of the frame. In order to gain access to this pin, the grip has to be removed.