I am beginning to drink the BCM kool-aid. I added a BCM Gunfighter charging handle, which is simply a great design idea, that works. I also looked at the BCM BCG (auto). My rifle has run flawlessly, so what will I gain from the "upgrade"? My current BCG does not have the heavier profile of the auto version. I know I won't gain auto fire from just the BCG, but are there other advantages to the design? Does the additional weight increase recoil or internal wear?