Visit Mossberg.com for more info. Mossberg 500/590 Series Shotgun Picatinny Rail Mount
If you love shotguns, the DP-12 is double the fun. DP-12 Shotgun 14 Shell Ammo Rail Carrier by Hi-Tech Custom
Hopefully it’s not less bang for your buck.
What do they mean by over and under? That I’m not sure. Is it a reference to shooting animals that fly and walk? Either way, the Benelli 828U is a beautiful shotgun.
I found this wonderful ad at http://www.vintageadbrowser.com/guns-ads-1950s It has ads from 1900s to the 1980s. This one impressed me with that brilliant picture of a man sitting on top of hundreds of empty shells.