Thanks for posting, the Lewis and Clark exhibit passed thru St. Louis and they had a replica on display it is pretty amazing they had the technology to do this, the pump was a little hand pump and you would have thought there is no way it would charge that gun but it sure did. Missouri just last year now allows the use of a 40 caliber air gun as a legal method to take deer. I have researched it and they run around 600-700 buck for one. No thanks but they are neat. Our conservation magazine did an article on one that was interesting. Here it is.

http://mdc.mo.gov/conmag/2010/10-0/a...omics?page=0,0

If you click on the photos, it shows 3 pictures, the gun and bullet, the deer kill and a safety photo of the boy and dad.