The Heckler & Koch HK41 is essentially a semi-automatic only version of the G3 built for the civilian market. Considering battle rifles aren't particularly known to be great at handling automatic fire, this isn't as much of a drawback as one would originally believe, but it is something to keep in mind, especially when entering close-quarters combat. It is otherwise mostly mechanically identical to the baseline G3A3 and can use most of its parts.