This set replicates a special M2 machine gun tripod mount used on HMMWV gun trucks during early OIF (Operation Iraqi Freedom).
The M2 machine gun is not included, but you can use this mount with whatever M2 you can find in HMMWV kits (Academy for example) or in after-market kits (Live Resin for example).
The elevation bar has to be cut in lenght to adapt to the setting of your choice.
You can find in-action pictures and more info about this mount in this forum thread at Armorama.com
http://armorama.com/modules.php?op=modload&name=SquawkBox&file=index&req=viewtopic&topic_id=165971&page=1