The ROOK Tactical Smooth Operator Safety Plunger for  GLOCK 9mm/10mm/.40  is machined from 17-4PH Stainless Steel and is designed to smooth out and lighten the trigger take-up thanks to its finely machined surface. These plungers in particular are then sent out for a Diamond Like Carbon Coating. This smooths it out even more and provides a hardened surface at the trigger to safety plugner interaction that should last a lifetime of use.
 
DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.