I've posted in other threads, and tried to get all the answer I seek whilst shopping for my first AR by searching past threads, here and at other forums/Google. I'm just not finding any info on this gun. Maybe that's an answer in itself. Dicks has an M&P 15 Tactical with quad rail, the melonite barrel with 5R rifling and flip up front and rear sights on sale for $999. I can do the Dicks credit cardand get another 10% off, making this $910, or just over $1k out the door. (card to be paid off next day.) I'm interested, however, in my newb-ness, I have questions I can't find an answer to. Is this a mid-length gas system? Looks like it to me, but IDK. Is this a free-float rail? And will I care for punching paper? Anything else I should be concerned about on this particular gun? I like the longer rail, because I like to reach more forward to grip the fore grip. But don't care for the feel of the bare rails. Seems like it would really dig in after a while of shooting. Would likely add an AFG later either way. Thoughts and comments much appreciated.