This AR-15 buffer retainer is precision-manufactured from stainless steel for enhanced durability and corrosion resistance in your rifle build.AR-15 Buffer Retainer ComponentStainless steel construction for longevityCorrosion-resistant finishPrecision-engineered for proper fit and functionEssential component for AR-15 buffer system operationAn essential component for AR-15 builds and maintenance this stainless steel buffer retainer ensures reliable operation and long-lasting performance in your rifle's buffer tube assembly.