Factory New 870 Marine Barrel, 18.5" Police diamond rifle sights, chambered for 12ga up to 3" Shells and fixed Cly Bore. This is part F246828 on the Remington parts list and retails for $205 and is the barrel that comes standard on the 870 Marine Police (and about the only difference between it and the other model). Hard to get at times based on production runs but I have a few and more on order. So if you want rifle sights then sell the bead sight barrel that came on your gun and get this one. Even used your barrel is worth $150.00.