So, I think I found the shotgun I want to buy. After playing the new Rainbow Six Vegas 2 video game I really have a liking for the FN Tactical 500 combat shotgun. I have been shredding terrorists with it, haha. So, did some browsing and it seems like Mossberg makes a Tactical 500. Anyone own any of these? The SPAS 12ga and the FN are a bit more pricey, but what are the differences? Also, what are my stock options? I like the folding stock on the shottys. This would be for home protection and for shooting targets. My current guns will fire a round over a mile in distance, and can penetrate through walls. I live in the city and would hate to possibly injure anyone else defending myself. A shot gun won't travel to my neighbors house, they don't penetrate as much as the guns I own. I currently, do not own a shot gun at all. I would probably want 12ga, something standard with all kinds of cheap ammo available. Thoughts? Suggestions and feedback from people who own a Tactical 500? I do like how the FN model shoguns have the rail system for add ons like flash lights or laser sights or what not. Would it be worth the few extra bucks to get an FN over a Mossberg? I have not found a Mossberg model that has the folding stock or the rail system, can those be added after market? Thanks in advance for any advice.