This video shows a modification of a VSR sniper rifle from its default power to a higher FPS sniper rifle. Using their own VSR, RA-Tech upgraded the rifle with a M145 Spring, Cylinder Head, Precision Inner and Outer Barrel from Maple Leaf. Take note that the video shows the increases in FPS of the rifle and reaching an average of 565.3fps with the Maple Leaf "Secret Kit". Even with such increase and mods, it's still easy to pull the bolt of the rifle.