The Rem 572 is a pump as mentioned.It will shoot Shorts,Longs and Long Rifles.There is or was a BDL and a 572A.The BDL had different sights which I never cared for.When I got one I bought the 572A because of the sights.I contacted Remington. I got a BDL stock and Forend from them and they gave me credit on the A's stock and forend. These were a good shooting little rifle. As far as I know Remington dicontinued the 572A but continued the 572BDL.A very similar rifle only semi auto was Rem's 552.Those were discontinued sometime back.The receivers are grooved for the grooved scope rings.I would highly recommend a 572..

Ruger Redhawk