.308 Silent Buffer Assembly Spring
.308 Silent Buffer Assembly Spring, The Trinity Force .308 SBA Recoil Spring is a drop-in buffer system designed to help the AR-10 platform function more smoothly and quieter. The carefully balanced, all-in-one system is easy to install and quickly reduces friction and vibration with much smoother harmonics than traditional buffer systems. Fits AR-10-style buffer tubes for use with .308 caliber or similar large frame semi-automatic rifles.