Advantage Tactical Sigt SPRINGFIELD XD(M), XDS - ALL MODELS, EXCEPT THE 5.25 - ATS - WITH FIREFLY NIGHT SIGHT UPGRADE (FRONT SIGHT SHOULD BE INSTALLED BY A PROFESSIONAL.) 5 differently colored front sights 5 differently colored rear sight inserts .044" of elevation shim (pink = .015", clear = .008", tan = .004", red = .002") Front and rear sight set screw hex keys