GO2 Weapons G215 is a Modern sporting rifle in 5.56 NATO caliber. It features a mil-spec forged upper and lower, free floating Slimline handguard, ambi safety, B5 Bravo 6 position stock and is finished in Black hardcoat anodize. 16" barrel is a 4150cmv barrel with NIB M4 feed ramp extension. Perfect weapon for the avid shooter.