Never used . Sold my m&p without using them. Will ship and take paypall plus 4% fee or discrete gift . Or ftf in you are local in AZ camp verda/cottonwood area

Thanks

Storm lake conversion barrels  m&p 40 to 9mm full and compact both for 250 or 130 eac-2013-08-17-15.38.01.jpgStorm lake conversion barrels  m&p 40 to 9mm full and compact both for 250 or 130 eac-20130817_153646.jpg