Submitted by Sean Gilday
The Army issues a Combat Shelter half ICS (Improved Combat Shelter NSN: 8340-01-521-6438) in the ACU pattern that’s damn good. The NYARNG gets them to all the snuffies. Before that the same shelter was available Woodland. It was made by Catoma for one.
It has a floor, rain fly, and insect netting and can fit your ruck and weapon all comfortably inside.
ED – Sean, good call. I tried to look up the ICS with the NSN that you provided and I could only find one civilian supplier. I also looked at Catoma, and while they do offer a number of interesting military shelter options (most under 6 pounds in weight) the ICS was not among them.
Some notes on the ICS. The shelter itself is made from flame resistant rip-stop nylon and comes with a detachable waterproof rainfly suitable for three season use which also provides a vestibule for gear storage. The fly can also be erected as a stand alone item without the tent.