The Strike Industries SI-GJP JitterPlug for Glock significantly enhances your Glock pistol's performance. Constructed from durable stainless steel, this drop-in component seamlessly upgrades your stock polymer guide rod, suitable for both compact and full-size GLOCK(TM) models. Durable stainless steel construction Compatible with compact and full-size GLOCK(TM) models Increases spring tension for improved lockup Eliminates barrel rattle for better action feel Easy drop-in installation Elevate your shooting experience with the Strike Industries SI-GJP JitterPlug and enjoy enhanced stability and precision.