JP Enterprises 5-Piece Alternate Spring Pack

The Auxiliary spring Rate kit for the JP Silent captured spring (JPSCS) is an essential tool for firearm enthusiasts seeking to fine-tune their rifles for peak performance. While the standard spring included with the JPSCS is engineered to deliver optimal performance across a broad spectrum of rifle configurations, the ability to customize the spring rate can significantly enhance your shooting experience, especially for rifles lacking an adjustable gas block. This kit empowers you to tailor the spring tension to your specific needs. If you notice the buffer head fully compressing and bottoming out during firing, consider installing a heavier spring to mitigate this issue. Conversely, if your bolt carrier fails to lock back consistently on the last round, even with maximum gas flow (in adjustable gas block setups), a lighter spring may be the solution. Particularly noteworthy for users with ambidextrous bolt catch extensions, such as the Magpul BAD lever, is the potential for increased bolt velocity with a heavier spring. This can lead to the bolt bypassing the catch before it can engage. In such scenarios, switching to a lighter spring can effectively resolve the problem, ensuring reliable operation. By allowing for precise adjustments, the Auxiliary spring Rate kit enhances the versatility and performance of your rifle, making it an indispensable addition for those who demand the utmost in customization and reliability from their firearms.JPSCS-SPRING15-80 white spring- JPSCS-SPRING15-85 black spring- JPSCS-SPRING15-90 green spring- JPSCS-SPRING15-95 yellow spring- JPSCS-SPRING15-100 spring