Interchangeable cartridge family inserts for the PMA Micro-Adjust Trimmer.
Please select from the chart and drop down menu below when ordering. If you have questions about cartridges not listed below please call for more information.
If you have a custom chamber and desire the best possible insert to cartridge fit, select the "Blank Insert" ("P") and ream the insert using the same custom reamer as your rifle's chamber. Blank Inserts have a 1/4" pilot hole pre-bored.