The Guntec USA BUF+SPR-9 AR 9mm Cal Buffer & Spring Set optimizes firearm performance with precision engineering for enhanced reliability. With improved cycling and reduced recoil, every shot transitions smoother. Engineered for durability, this buffer and spring set is suitable for novices and experts alike, ensuring reliable functionality and an exceptional shooting experience. High-quality construction for optimal performance Improved cycling ensures smoother shots Reduced recoil enhances control and accuracy Compatible with AR 9mm platforms Ideal for enhancing shooting skills Transform your shooting experience and elevate your AR 9mm's capability with this indispensable upgrade.