This new Just Right Carbine JR Carbine fires the 9mm round. It has a 16" threaded barrel with an overall carbon fiber finish. This rifle has a flat top picatinny receiver rail, a quad railed forearm, a 6 position collapsible stock, an ambidextrous bolt(can be configured for left or right hand ejection), and an ambidextrous bolt handle (can be switched from left to right). This cool rifle uses Glock 17 magazines. This rifle comes with box, lock, manual, and one Glock 17 round magazine.