I picked up an Ameristep Bone Collector hub-style pop up 2 - 3 years ago on a good sale. Finally got around to using it for the first time last year. Have used a couple other pop up blinds years ago with some success for both deer and turkey hunting but really haven't used them all that much. Here are some things you may want to think about Namrock - mostly the negatives that I did not like about this blind...although it does have positives as well.
Popped it up outside the barn to air it out and practice shooting from it...
wouldn't you know it....I broke one of the fiberglass support stakes before I even used it for hunting. Had terrible Customer Service trying to order a replacement from Ameristep. I think hey finally answered my email long after hunting season was over. Fortunately, I was able to improvise on my own by using an electric fence stake to fix it.
It has little loops and buttons to secure the window flaps which are a real PITA to fumble with in the dark. Even worse - the shoot through screen windows are attached with VELCRO! I don't know about you but I hate anything velcro in the woods. I'm sure the deer a mile away heard me opening these windows in the pre-dawn darkness.
I am not sure what the dimensions are but I would not want it any smaller for sure and a little bigger would be nice...
I was able to use it for firearms hunting as well. I have a frame made from 2X4's with rebar stakes in the bottom which works well for a shelf/rifle rest, but for this particular blind and spot, it was a little too low so I used a shooting stick this year.