Smith & Wesson M&P/SD ATS Sight:

Designed for speed, precision, and clarity of sight picture, our one-sight-fits-all M&P and SD sight kit includes:

• 5 differently colored front sights
• 5 differently colored rear sight inserts
• .059" of elevation shim
  (pink = .015", clear = .008", tan = .004", red = .002")
• Front and rear sight set screw hex keys

With our M&P .45 start with .006" of shim. With .40 calibers and 9mm start with .045" of shim.

With SD 9mm and .40 caliber pistols start with .038" of shim. Amount of needed shim will vary, depending on load and particular barrel.

Approximately, each increment of .002" to .0025 of elevation shim will affect bullet impact by 1" at 25 yards. The M&P and SD front sight base is a press fit and may need to be professionally installed.