This used Heckler & Koch SL8-1 rifle fires the .223 round. It has a 16" barrel with an overall matte black finish. This semi-auto rifle has an ambidexterous charging handle, an ambidexterous safety, and a side-folding skeletized stock. It comes with an optic built into the rear of the carry handle, an integrated bipod, and 1 30 rd. mag. This rifle is an H&K G36 clone.