The OP Trigger return spring is engineered in-house and domestically produced to work solely with the geometry of our M&P 2.0 TAC Trigger System. With an added felt insert to dampen recoil vibration and increase longevity, grab a few for your range bag as a maintenance/replacement item. We suggest you have a competent gunsmith replace every 5,000 rounds for maximum reliability. 

*compatible with 9mm and 10mm 2.0 models* 

WARNING: This product can expose you to chemicals including lead, which is known in the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warningsca.gov