About this marker:

This type of marker is called an Autococker, it is one of the most advnced guns out, and it is also one of the most complex. It is pinpoint accurate when calibrated correctly. A stock one of these cost about $400 or so. After I switched out alot of parts it ended up costing about $800-900, but it was worth it. I recomend this gun for every one it takes a little getting used to but once you shoot one you will love it.

This is my current marker

(without a few modifycations)