HOW HK416D BATTERY CAN SAVE YOU TIME, STRESS, AND MONEY.

This is mine, all Plastic. This is often as I took the cover off no mods. My considered, is there a difference between the new plastic assy vs the metal one in how the package would perform? You guys who say you have accomplished just one with no problems, which was it plastic or metallic? colours could surface in different ways on personal monito