If you're looking to improve the function and reliability of your AR-15 rifle, then you need to upgrade to the Geissele Super 42, Braided Wire Buffer & Spring Combo. Using three independent wire strands, these AR15 Buffer Springs by Geissele act as a harmonic damper and energy absorber by allowing the springs to flex separately from each other. This concept makes it a lot easier to rely on your rifle since it helps displace excess energy which decreases the chance of spring failure. What's more, the Geissele AR-15 Braided Wire Buffer & Spring Combo has a decreased tendency to lose length and force over a given round count when compared to its stock counterpart. This is the perfect product for those who can hear and feel those annoying spring reverberations from the buttstock. Also, with a 15% stronger average return force, the Geissele Super 42 Spring assists in stripping rounds out of the magazine when working with a dirty weapon or when using steel-case ammo. This firearm enhancement is strongly recommended to anyone who wants a smoother firing experience at an affordable price. Please note that this product is for use with Carbine length buffer tubes and is not compatible with rifle length or A5 buffer tubes. Specifications for Geissele AR-15 Super 42 Buffer Spring/Buffer Combo For Carbine Receiver Extensions: Manufacturer: Geissele Color: Black Gun Model: AR-15 Gun Type: Rifle Condition: New Country of Origin: USA Features of Geissele Super 42, Braided Wire Buffer & Spring Combo : Spring constructed out of 3 independent strands of wire Acts as harmonic dampener and energy absorber 15% stronger average return force than a stock spring Package Contents: Geissele Super 42, Braided Wire Buffer & Spring Combo