Last year I was looking around for a nice SKS for my son's 18th birthday and upcoming graduation from high school, what I found instead was the S&W M&P-15 Sport. At $690 nothing else came close in price, the fit and finish was better than any other AR on the rack, but what sold me was the lifetime warranty along with that shop being an S&W Service Center. As I recently spent three years in the Middle East, actually SWA, the absence of the forward assist and dust cover are not an issue to me.
I liked it so much as a matter of fact I kept it for myself and ordered a second for my son.
The one downside is that I have not owned ARs or any other guns chambered in 223/5.56 in the past so I had to buy quite a few accessories that I now believe exceed the original cost of the two rifles.
• CMMG 22lr conversion kit (w/ BlackDog 10 round magazines)
• RCBS AR dies (223/5.56)
• Reloading components (CCI #41, CFE-223, Hornady bullets)
• MagPul furniture (MOE in black for my rifle)
• Extra magazines (5 rounders for hunting and 10 rounders for fun)
• Ammunition (little of this and a little of that)
• AimPoint Pro (these things held up great in Afghanistan)
• USGI carry handle/sight (designed by the Marines, every marine a Rifleman)
• Etc.
We have had a lot of fun together shooting these. The CMMG 22lr conversion while not as accurate as 223 works well too, if I can find 22lr. Since I wear glasses I prefer the AimPoint while my son is doing well with the USGI 6/3 carry handle zeroed at 25 yards on his rifle. As for reloading I discovered it is not too hard to come up with loads that are more accurate than PMC or surplus using CFE-223 and Hornady bullets and data from the Hodgdon 2013 Annual.
The only issue I have is keeping my son from becoming a Mall Ninja.
Oh, why do we own two sports? "God created Heaven and Earth, but Samuel Colt made all men equal"