Use this kit to adjust your length of pull for your CPR "Crickett Precision Rifle." This kit provides a full 1 1/2" adjustment for your rifle for additional years of enjoyment. Instructions Extend your CPR length of pull (LOP) by 3/4" by adding the 3/4" spacer and use the long cap head screws provided to secure the butt plate with both spacers. Reduce your CPR length of pull by using the short cap head screws and remove the existing spacer. Secure the butt place to reduce the standard LOP of CPR models by 3/4".