Rail system, crane stock, flip-up battle sights, comes with foregrip and rail covers included.
Very strong externally, I've played pretty hardcore with mine over the past month and have yet to have an issue.
Very accurate in it's stock state, adding a hop-up bucking, scs nub, and TBB should take it over the top.
Chrono is as stated, 380-390 out of the box, I chrono'ed at 345 using .25's yesterday, and they worked very well in dense wooded area.
Shoots hard, shoots fast, and feels solid as a rock. So far I've made a lot of clean shots with it, oh and the Krinkov flash hider makes it sound great!
People have said it's heavy when they hold mine, I have a 4200mah 9.6v crane stock battery in it, and a 551 holo sight, but I think it feels fine.
D-ring sticks up past the lower part of the rail making for an awkward placement for a CQB sight to get the correct distance of eye relief.
Rating: [5 of 5 Stars!]