The Tiger Rock Inc. ST009P4-7 AR-9mm Complete Custom Pistol Buffer Tube Kit enhances your firearm's performance significantly. This high-quality kit is designed to ensure optimal fit and functionality, providing a superior upgrade for your AR-9mm setup. Featuring a custom-made AR-15 buffer tube, installation is a breeze with included components like the buffer castle nut and stock buffer end plate. The 7 oz stainless steel bolt buffer ensures reliable operation while the enhanced buffer spring improves responsiveness during use. AR-15 Custom Made Pistol Buffer Tube AR-15 Buffer Castle Nut Stock Buffer End Plate Buffer Spring 7 oz Bolt Buffer AR 9mm - Stainless Steel Upgrade your shooting experience with the Tiger Rock Inc. ST009P4-7 kit, designed for performance and durability.