MEC 331 Spring Pad for Primer Seating
A very common replacement part, but we highly recommend that you replace all three parts of this assembly with the Primer Seating Assembly (#325CP). The three-part Assembly is a better value and you'll eventually have to replace all three parts anyway.
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to – www.P65Warnings.ca.gov.