If I may add my personal oppinion as far a s arecommendation, I notice that your going for that barrel with a "gas retrival tube" in my own words, or that "double barrel" look. I would, under the regular barrel with the glowstick, use a tube that has a smaller diameter or just thinnerso that it "flows" with the rest of the zapper. I actualy own one, and I play duck hunt with it all the time. Its a fun gamer, especially since its a double game cartridge also including super mario brothers, the original nintendo game system.
-tubachris