PolarStar Fire Control Unit Rev. 3 Single-Shot Made of strong
Baker’s notes & crumb story
Description
Made of strong
Short stroke recoil spring improves cyclic rate
The GLOCK 17 Gen4 is just as popular and sought-after as the original
much like found on most common AR15/M4 rifle
PolarStar Fire Control Unit Rev. 3 Single-Shot Made of strongFeatures Updates Early Version Fusion Engine FCU to Revision 3 Easy, Drop in Installation Pre Wired, No Soldering Required Upgraded High Quality Components Compatibility: For PolarStar Fusion Engines Package Includes: Rev3 FCU Board