Here is an unusual airgun a (Paul air shotgun) which I would think not many people have had the pleasure of handling, I have just finished resealing it for a friend. As you can see the valve is quite crude but it is very efficient, (looks like it could have been designed by a plumber). As you can see it has a large reservoir and I put about 40 pumps into it which produced 5 shots. Many thanks to Garvin for help with the pictures.

http://pic16.picturetrail.com/VOL683.../335881161.jpg

http://pic16.picturetrail.com/VOL683.../335881138.jpg