I have a 30",vent rib,full choke barrel for a mossberg 500,should fit Maverick's also.takes 23/4 or 3" shells. 12 guage Not threaded for chokes. bluing is worn thru in spots,it's a used one I picked up a while back and just don't need. Bore looks real good still. ftf only,25.00 cash. I live in washougal,and meet anywhere on this side of the river within say 15 miles.