HOW KOCH HK416 RIFLES CAN SAVE YOU TIME, STRESS, AND MONEY.

This is certainly mine, all Plastic. This is certainly as I took the cover off no mods. My considered, is there a distinction between the new plastic assy vs the steel a single in how the package would operate? You fellas who say you've done a single with no complications, which was it plastic or metal? Mine is on the best way back again to HK It