Legacy Piston Maintenance Kit
Kit Contains:
(1) Operating Rod
(1) Piston Return Spring
(1) Spring Cup
Compatible only with the Legacy M6 rifle series*
*To determine which piston maintenance kit to purchase, measure your existing spring cup. If your spring cup measures approximately 1" in length and is black in color, you have the legacy platform. If your spring cup is silver in color and measures approximately 1/4" in length then you have the newer IC system and will need the piston maintenance kit sold HERE
