A few years ago, I bought a "matching" pair of Remington 870 Super Mag's. The difference between the two? One was set up for tactical or home defense and the other was just for hunting. I call them matching because they are the same make, same model, same color (black), and have consecutive serial numbers! This is just an added bonus. I bought them at a pawn shop, something I normally dont do, but a friend of mine told me about them so I went and got them.
Long story short, I use the "tactical" one for home defense, it sits behind my night stand with 7 rounds of 00 Buck! It features the basics, ATI stock with pistol grip, stock fore grip, I think its a 20" full choke barrel, sling mounts, side saddle, etc. Very KISS.
The other, simple 3-1/2" Mag hunting shotgun. Longer barrel, changeable remchokes, normal buttstocks, etc.
As you can probably tell, for a self-defense instructor, I dont know much about shotguns. I know enough to get me by or to get me into trouble. What I was thinking is keeping the one that is already modified, modified, and taking the stock one and making it TACT-I-COOL! I am talking all out! Adjustable buttstock w/pistol grip, cool (functional) sights, tactical barrel, all the bells and whistles. I want to spend so much money on this, my wife will want to test it out on me!
But seriously, I dont know squat about modifying a shotgun. I really want to do the work myself, I mean, some of it seems simple enough from the research I have already done. But I just dont know what is good, what is cheap crap, what is really needed and why, etc. I have other shotguns I use for hunting, so this one really never got used. I want to make these consecutive numbered guns more alike only better. So could some of you more "talented" shotgun guru's out there help me out. I want to play with this and make it mine.