Strike SIJCOMP222 JComp V2 Japan 223 Remington/5.56 NATO Steel 2.5" The SI JCOMP V2 is the classic Type 89 compensator re-engineered and updated for the 21st century. This compensator has an increased muzzle rise compensation, and is compatible with Oppressor and FerFrans concussion reduction devices. Type: Compensator Model: Japan Dimensions: 2.5" Size: 223 Remington/5.56 NATO Material: Steel Thread Pattern: 1/2"-28 tpi Finish: Black