GHarman -
There are many forums already dedicated to the subject. I can understand your desire to have our own little subforum here on the subject, but this is a Diesel Truck forum, and what we have is sufficient.
I would strongly recommend reading the stickies in the following two links;
http://m4carbine.net/forumdisplay.php?f=3
http://m4carbine.net/forumdisplay.php?f=4
If you do register with the forum, they can be a bit short, bordering on abrasive with newbs ~
NOT for the soft skinned. "Read more, speak less, use the SEARCH button". Centuries combined of hands on, real world experience on the platform over there, all typed out, just need to read it.
I'm still a "Newb" by comparison.
I've spent the time and money to get the professional training on the operation of the platform, and (regrettably) am better than a majority of our troops that are currently in harms way, yet a paltry cadet that just knows the fundamentals compared to a majority of the long term membership on M4C.
There is also a Colorado based owners group,
http://www.ar-15. co/forum.php?, where you can learn a little, and find out about local shooting events and locations.
The IDPA ruined me on static lane shooting for handgun (READ - public range and gun clubs to whit there is years long waiting lists to even get in), and now I am in desperate need to find a location to shoot my rifles out to at least 400y, and reasonably close to the Denver area to keep up those skills that I was taught before I loose them. It would appear that in Colorado it is a closely guarded secret, and it's usually a guy who knows a guy that has property that allows a select few to shoot there. I've received some invites, but they are all to places that are at least a 2 1/2 hour drive to get there.
Had a place just north of Castle Rock, but they (city) pulled an Imminent Domain on it, along with 10 other property owners there for a freakin' bike path up the middle.