WHAT DOES SHOTGUN 12 GAUGE 3 1/2 MEAN?

This stuff in addition to the safety, trigger, magazine extension nut, and cocking indicator are all anodized for don resistance and to include a little flash into the overall package.What happens to electro-optics when batteries operate out? With the Mepro M22 self-illuminated reflex sight, you will not will need to consider batteries at all.By si