The SI JitterPlug is a drop-in component that installs in a stock polymer guide rod for compact and full-size Glocks. Installed between the guide rod and the front of the lower locking lugs, the SI-GJP increases spring tension on the barrel and slide,...
The SI JitterPlug is a drop-in component that installs in a stock polymer guide rod for compact and full-size Glocks. Installed between the guide rod and the front of the lower locking lugs, the SI-GJP increases spring tension on the barrel and slide,...