So, a couple of days ago I was at the range with my girlfriend so she could get an idea of what she may want to use as a CCW once she's able. After she went to the car I got to looking around and one of the guys let me check out a Daniel Defense rifle. The thing was surprisingly light, and pretty comfortable with no parts that I felt like I had to wrestle. But for a price that seems to range from 1500-1800, that hurts to think about. I have a friend that has a DPMS Oracle and has said after a few upgrades, which he estimates I think is 800 total (including the gun?), who has told me that in the case of something more or less over 1k I'll just be paying for the name. So based on that, and the questioning looks from my girlfriend who didn't see the big deal in a rifle that doesn't come with what looks like anything special, I dug around on grabagun.com and managed to find http://grabagun.com/diamondback-db15-ffr-5-56-16-30rd-blk.html Which hurts a lot less to think about spending. And I also managed to find, http://grabagun.com/kel-tec-su16-sport-utility-223-18.html And I have thought an SU16 would be a nice firearm to have. But I've titled this thread AR-15 questions because I want to ask this community, with an SU16 are you losing out on a lot of features that a standard AR-15 would have? If I should stick with the 15 platform, is there one in the same relative price range that is better? Same friend said that the Diamondback doesn't have a forward assist. And while I have no idea what that is or what it means, he didn't make it sound like it was a good thing. Any help and suggestions would be appreciated, I'm in no real hurry to buy a 5.56/223, I want to make a well informed decision with a decent price that won't make me cringe too hard.