Hey guys,

I've been watching USPSA events online and in person and am intrigued with the pistol/shotgun/rifle matches they have. I'm getting ready to shoot in the stock class in a couple of months but am about to invest in an AR 15...any words of caution???

I am looking at a Bushmaster AR 15 with a long bull barrel, collapsible stock, removable rail...and I think that's it. Having never really shot a rifle before I don't really know what to look for or any brands to avoid...