SAT CNC Shortened Barrel for Tokyo Marui M870

Have you ever wondered why the barrel of the Tokyo Marui M870 was so long while the 3 inner barrels were only 3/4 the length? That's how the original M870 looked but if you want to shorted the barrel for CQB purposes and NOT affect the FPS in any way, this Shortened Barrel from SAT is what you want!