Make your Bushmasters velocity more consistent in less than 1 1/2 minutes. While the stock piston only uses one o-ring to guide it, the Shocktech piston uses two. Having the extra o-ring provides a better seal making it less likely to leak. Also, the piston is held in its' position inside the gun by the o-rings. Having two points of contact keeps the piston from wobbling or moving off-center inside the gun.
Shocktech Products
