Luth-AR 308 Buffer Spring Carbine Silver. 308 buffer spring is an important link in the overall function of your AR system. A properly weighted and installed buffer spring can make a difference of several hundred rounds in some cases completely overwhelming your stock spring. Over a thousand rounds can create a buffer spring fatigue situation. While an over-recoil spring may seem like a good idea initially the longer the buffer tube the more likely it is to break or wear. While a 'light' buffer spring may initially seem like a good idea a 'heavier' spring may be the better choice in some instances. The 'lighter' spring allows the shooter to use less ammunition. The buffer spring does however need to be replaced after only a few shots in order for the shooter to become fatigued and require less shooting. It is however still a good idea to keep a buffer along with your standard spring until you find that the spring is adequate for your needs. Specifications for Luth-AR 308 Buffer Spring: Manufacturer: Luth-AR Color: Silver Fabric/Material: Tempered spring steel Gun Make: AR Platform Gun Model: AR-10 Condition: New Projectile Caliber: .308 Caliber Caliber: .308 Winchester Package Contents: Luth-AR 308 Buffer Spring What firearm models does the manufacturer say Luth-AR 308 Buffer Spring is compatible with? The manufacturer says that Luth-AR 308 Buffer Spring is compatible with AR-10Luth-AR 308-CS-10A: 308 Buffer Spring Carbine Silver