SPP / MP9

This machine pistol appears in official GTA 6 screenshots, but the frames are not clean enough to settle which real gun it copies. Fan analysis splits between the Steyr SPP and the Brügger & Thomet MP9, which is less of a contradiction than it sounds: the MP9 is a direct development of Steyr’s TMP platform, of which the SPP is the semi-automatic civilian version. The entry keeps the double name until Rockstar prints its own on the receiver.