I read an interesting article in SWAT magazine that got me doing some thinking and I was curious as to the thoughts of others. The author of the article (Mar '13) has only 2 platforms for rifle (AR/M4) and pistol (1911). Within these, he has everything from .22lr for practice, 9mm, .40S&W .45ACP .223 .308 etc. With these he has home defense, daily carry, plinking, and hunting set ups. Of course we could dispute his caliber choices, or GLock vs 1911, but that's irrelevant. I'm just looking at the generalized concept here. PROS: There is only 1 manual of arms to learn, you're able to teach your spouse and kids on one platform that they become familiar with and can move up from there, many interchangeable parts, fewer gun specific tools, more familairity between different family member's weapons or weapons in various locations, etc. CONS: Although the author didn't list any out, the few that I see right off are the lack of availibility of this breadth in your favorite brand. You don't get the latest, coolest toy on the market. And lastly, cost. Depending on how committed to this concept you are it may be rather expensive to undo everything you've already done. This had never been my thought, but I've been kicking it around for the last couple of weeks since I read this article. I'm curious as to your thoughts. Thanks.