The invention relates to a mechanism for performing multicast transmission in a cellular network. Under this approach, the non-parallel etalon is formed from a readily available, low cost optical component, and may include an etalon with a wedged shape or with at least one curved surface. A diagonally descending wall member 76 is formed on each one of the upstanding side wall members 74 to facilitate positioning of the slot 64 on a guide rod 20 so that a spring assembly 18 is compressed to allow disassembly of the handgun 10. The logic transistor is protected while the NVM cell is then formed including forming a charge storage region using nanocrystals and a metal control gate over a portion of the metal select gate and a portion of the charge storage region over the substrate.