Ares have come out with a Bolt Action Upgrade Kit for the ARES TX System sniper rifles such as the MS338 and the MS700. This upgraded party comprises of Stainless Steel cylinder and is made of very high quality parts to withstand a very high pressure spring for maximum power. Check local power laws before installing in your rifle. Installation and use in some countries may be illegal..
Installation of this item requires some basic gunsmithing knowledge. If you have never performed an upgrade yourself, consider having us do it for you properly to risk damaging your rifle.