AR15 Shotgun Black- RA12MFSB. 12 gauge semi automatic AR15 shotgun with a 18.5" steel barrel. This shotgun has all of the tactical features you need including flip up sights, picatinny top rail space for all of your accessories. Synthetic stock is comfortable and aids accuracy and has an adjustable cheek rise. This shotgun makes a great home defense or sporting option. Comes with a 5 round magazine.