The JE Machine Tech PS-BFSC4 .223 5.56 Silent Recoil Buffer Spring System revolutionizes the shooting experience for AR-15 owners. This advanced drop-in replacement for conventional buffers and springs significantly reduces noise and felt recoil, ensuring a quieter and more comfortable shooting experience. Made from durable 4140 steel, it promises exceptional performance and reliability over time. Weighing 10.1oz, the one-piece design simplifies installation, making it suitable for all skill levels. Exclusively compatible with carbine buffer tubes, this system enhances firearm efficiency while minimizing potential risks associated with traditional designs. Elevate your shooting confidence with this innovative recoil reduction solution.The JE Machine Tech PS-BFSC4 .223 5.56 Silent Recoil Buffer Spring System redefines performance for AR-15 enthusiasts. Designed as a drop-in replacement for traditional springs and buffers, this innovative one-piece assembly significantly minimizes noise and felt recoil, enhancing shooting comfort. Crafted from high-strength 4140 steel, the system offers exceptional reliability and longevity. Its self-contained design simplifies installation, making it suitable for both novice and experienced shooters. Weighing in at 10.1oz, this system is compatible exclusively with carbine buffer tubes, delivering a seamless upgrade to your firearm while ultimately enhancing your shooting experience.The AR-15 Silent Recoil System is at the forefront of AR buffer technology. Our system is a drop-in replacement for the traditional AR-15 carbine spring and buffer. This revolutionary patented one-piece assembly eliminates many of the risks of other "cap screwed" recoil systems on the market while providing a reduction in buffer noise and felt recoil. Our system is constructed from high-strength 4140 steel. This system is truly a testament to our ingenuity and is a must-have for new and veteran shooters alike. Self-contained & drop-in design for easy installation Reduce felt recoil Precision machined high-strength 4140 steel One-piece design for improved reliability For use with carbine buffer tubes only Weight 10.1oz IMPORTANT: This will only work on a .223 / 556 Installation: 1. Start with separating your lower and upper receiver2. Remove your standard buffer components. (Buffer and Buffer Spring)3. Simply slide in the Silent recoil spring into the buffer tube with the Baseplate, the smaller and lighter end first. The heavier weighted side should be at the head of the buffer tube where it would contact your bolt carrier group once the rifle is re-assembled.4. Lastly, Re-attach your upper receiver to your lower receiver. Note: The Silent Recoil Spring system doesn't require the Buffer Spring Detent and it is optional for the user to remove the Detent for an even easier installation.