Picked up a beater 500A the other day i;m gonna turn into a HD gun and need a 500A(12 ga) 5 shot mag tube. I'll pay cash or could trade a 835 tube, i have a couple factory Mossberg pistol grips w/mounting bolts, a black,synthetic tactical(ringed) forend that fits a long action slide(7 1/2"), a new laser with barrel mount,mounting ring etc i bought from havlinsales but never used......let's make a deal.......Mike