fine turned in brass, two pieces, barrel and heat shield. Can be used for both hull MG and coaxial MG. Note: This barrel is NOT drilled to accept the fiber optic MG fire from the Tamiya DMD system.
Be advised, the hatch will not close with the periscope in place and the TBS installed. Mount for TBS will interfere with periscope. However, you can lower the TBS mount about 4mm and all will fit correctly with the apple removed.