I have been looking at rails for awhile now and i wanted to keep the front sight but have the slim feel of the flowing rails.. so i decided to try the UTG Pro Super Slim rail and i must say i really like the feel alot and the workmanship is 1st class so i feel it's worth the price.
The rail is so well made that the feel is one-piece.
I feel all S&W M&P 15 Sport and Sport II rifles should ship with this rail as it make's the gun feel more higher end.
The fit was so good that i used my hand on the delta ring..
They also send these mini rails along in the kit with the needed screws to add what ever one would want and you could also buy more.. i like this system way better then the 4 bulk type rails systems that look like you could cut your hand on ..
The cost was $68 shipped from Cheaper then Dirt..