The GFBP is a short and handy Shotgun in the classic bullpup configuration (action and magazine behind the trigger). Bullpup shotguns accommodate a longer barrel without adding unnecessary length and allow you to hold the weapon closer to your body. At only 3 inches longer than the Mossberg 590 Shockwave The 29.5-inch GFBP is ideal for the narrow corridors of home defense and tactical use. - The GFBP bullpup shotgun is compatible with MKA-1919 magazines and accepts 2 3/4 and 3-inch 12ga ammo. The GFBP features adjustable flip-up sights as well as a bottom Picatinny rail for mounting accessories. Red dots and reflex sights can also be installed on the GFBP for faster target acquisition. - FEATURES - STYLE Magazine-Fed Bullpup Shotgun - MODEL GFBP - WEIGHT 8 lbs - BARREL LENGTH 18.5 - BARREL THREADED No - BARREL SHROUD No - OVERALL LENGTH 29.5 - CHOKE Fixed-CYL OK to shoot Slugs - FRONT SIGHT Picatinny Rail Mounted Flip-Up Sights - SLING MOUNTS Quick-Disconnect (QD) Sling Mount - MATERIAL Polymer Upper & Lower - SYSTEM Gas Operated - RAIL Picatinny top & bottom