A 14° narrow angle lens is included with the MAC 250 Entour as of S/N 4011896001. The Entour still ships with the standard 17° lens installed.

If you have an ealier MAC 250 Entour without the optional 14° lens (P/N 41200029), please contact your Martin distributor. The lens replacement procedure is described in revision D of the MAC 250 Krypton/Entour user manual.