Was rummaging through a box of old Army stuff I still had and found these three example of XM16, M16 and M16A1 bipods and carriers used "back in the day".......
One on the right was the first issue for use with LBE. There is a slot on the front for the original 3 piece cleaning rod. As I recall these were issued with the XM16 and M16s. We had two per squad for the "AR" Men (Automatic Riflemen). The center was issued after all the problems with M16s jamming. The had the 3 piece cleaning rod slot on the side and a pouch one the front for patches, LSA, a chamber brush, a bore brush and issue tooth brush. The one on the left is the last issue. It had no cleaning rod as the new 4 piece rod was issued for it with the other cleaning gear in a separate pouch (far left).
Attachment 204846
Two of the bipods were made by Colt;
Attachment 204847