The STG 44 is a modern version of the Sturmgewehr 44 which was a German-made assault rifle used during World War II and considered the first of its kind. The GSG STG 44 is a .22LR model with a metal receiver and wood Stock – Caliber: .22 lr HV – Overall length: 946 mm – Overall heigth: 220.5 mm – Weight: 4.2 kg – Barrel length: 414 / 420 mm – Rifling length: 406 mm – Number of grooves: 6 – Sight length: 435 mm – Trigger pull: 2.500 g / 25 N – Magazine Capacity: 25 – System: Semi-Automatic