I had a remington 870 tactical which I traded for my acr. I loved the 18.5" barrel 6 shell magezine tube and it could use any remington 12 guage choke tube. It came with the sharpened door breaching muzzle break. Came with a picatinny rail and ghost ring sights too. Great shotgun I saw the atacs version at the store which was nice. And with a pistol grip stock and everything else was the same. Price only jumped up $75 or so. I am thinking its time to fill that void in my safe again and was leaning towards it but wanted to hear some other suggestions. Mossberg is comparable but I havnt seen one with a choke tube in the similar platform. The barrel does seem a bit heavier and I do like the thumb safety since I shoot lefty. That keltec is nice but I don't know if ny allows that many shells in a shotgun. Especially for a repeater.