JE Machine Tech AR-15 Pistol Buffer Tube Fluted Mil Spec Black

JE Machine Tech AR-15 Pistol Buffer Tube Fluted Mil Spec Black. The manufacturer says that JE Machine Tech AR-15 Pistol Buffer Tube Fluted is compatible with AR-15JE Machine Tech PS-BTP3: AR15 Pistol Length Mil Spec Fluted Buffer Tube Black