Just added a Mossberg Maverick 88 Field Gun in 12 Gauge to the mini armory. Thinking of turning it into a home defense weapon/tactical rig (I don't hunt with shotguns, so this was a "buy it cause I can" kind of weapon). Any suggestions for shorter barrels? I was looking to pick up the 18.5" Mossberg offers on thier website (obviously through a retailer) for approx $74. Any other alternatives/ideas, please fire away...I'm a newb in this world.