Micro-Polished Surface Resists Wear & Carbon Build-Up
Precision-machined, stainless steel piston is heat treated for hardness to maintain critical tolerances, resist wear, and help prevent rounding of the gas grooves for extended service life. Micro-polished surface reduces friction and resist carbon build-up, requiring less frequent cleaning.
Big Book Catalog, Issue:69, Page:164
SPECS: 420 stainless steel, polished finish. 3.620" (9.2cm) long x .497" (1.3cm) piston diameter. 1.7 oz. (48.24g) wt.