This Sig Sauer Slide Assembly Is a factory replacement for the Sig P226 MK25 in 9mm Luger. The SIG SAUER P226 is the pistol that set the standard by which all other combat handguns are measured. The exceptional ergonomics and balance make this fullsize pistol easy to handle. Its longer barrel yields better ballistic performance and accuracy. The P226 MK25 is identical to the pistol carried by the U.S. Navy SEALs, the fleet's special warfare operators. Engraved with an anchor on the left side of the slide, the Sig P226 MK25 is the official sidearm of the SEALs.