The Swiss Arms M6 S is a smaller, lighter version of the Black Eagle M6. The gun has 2 pinch rails, easy mounting for a laser, a flashlight, or a scope. Swiss Arms Black Eagle M6 Sniper Rifle states on its box a velocity of 328 fpsFeet per second, usually written f.p.s. with .20 g BB. However, after testing the rifle with a chronograph we achieved strings of velocities averaging 360 with .20g BB, 340 with .25g BB, and 440 with .12g.