SADLAK manufactures national match quality precision pistons using premium-grade, heat-treated stainless steel with a highly polished surface. The stainless material and heat-treating operations are both certified to assure that quality and all critical dimensions are individually inspected.
Our precision pistons are made to the exact GI specifications with all critical dimensions individually inspected. The 420 stainless material and heat-treating operations are both certified to assure quality. The pistons have a highly polished surfaced using a non-contact electro-polishing method that maintains tolerance on the critical diameter and does not “round–over” the edges on the grooves.
 
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TiN coated piston - The pistons are hard coated with a gold colored Titanium Nitride (TiN) finish.  This coating, often used on machine cutting tools, helps reduce galling and pitting and holds up better to the high heat and abrasiveness of gunpowder and primers.  The resulting effect is a smoother action an improved life of the piston and cylinder.
 
Grooved TiN coated piston - If you plan to shoot NM ammo then the groove in the piston is useful. Otherwise, it was not intended for regular ball ammo (not enough power). The groove provides a more consistent pressure against the op rod by bleeding off some of the excess pressure inherent in high-power Match ammo. This results in a slight recoil reduction to help "get back on target" during rapids. It also breaks the vacuum between the piston and the cylinder allowing the shooter to hear the piston slide down to confirm it isn't fouled.