Crosman has taken the semi-auto range to the new future tech era with the Crosman ST-1. This semi -auto bb airgun has a dual duty and can be used either as a pistol or rifle. With a modern look the ST-1 integrates a high capacity 300 round magazine with a compact finish. Lock in the adjustable/removable stock and barrel extender and you’ve got a red dot sight rifle ready to be emptied at long range. Take them off and you’ve got a semi-auto enabled AR pistol ready