The Spring Booster is an optional buffer-system component designed to preload the L6 Black Spring. This added preload produces spring force comparable to the Orange Spring, helping improve feeding reliability while slightly increasing the firearm’s rate of fire.
The Spring Booster is intended only for the specific buffer, spring and receiver-extension combinations shown in the Lima Six Buffer System Configurations chart.
Important: Do not use the Spring Booster with an Orange Spring or in any configuration not shown on the chart. An incorrect combination may increase the risk of a slam fire.
