Yes, another gun in the KAST series. I think that somewhere I said that the R4 was going to be it. Well it's not. This is gonna be it. (for now...). The trigger is pretty far back, so it's as good as the R3 if not better for power and range. It has rails for sights, iron sights, and flip up sights for longer range (or just because I felt like it). Same magazine system as the R3.
Um.... Sorry guys, but I took this apart a while ago. I thought I put pictures on my computer, but I can't find them... So no instructable. Sorry.