The LBE Mil Spec 4 Position Buffer Tube is precision-engineered for AR rifle applications with a durable matte finish and reliable 4-position adjustment.LBE Mil Spec 4 Position Buffer TubeMil Spec standard for guaranteed compatibility4-position length adjustment systemMatte finish for reduced glare and durabilityDesigned for AR rifle platformsMade in the United States with rigorous quality controlBuilt to exacting standards by LBE this buffer tube delivers the reliability and precision that shooters demand for their AR rifle builds and modifications.