Gauge/Caliber : 12 Length : 21 Model : Remington 887 Nitro Sights : Hi-Viz Fiber Optic Rifle Sights Bore-Rifled : Fully Rifled Finish : Matte. Now you can use your 887 Tactical Shotgun for deer hunting, all you need is this extra barrel. This Remington Accessory 887 Nitro Mag barrel is for deer. It is 21 and is fully rifled with Hi-Vis fiber optic rifle sights.