Quick cap. Some people have had trouble with cupseals, but the new CS that Armotech released stops this problem and is standard
Hard to reload without upgrades
When I first got my Zeus, the first thing I did was take it out and clean it thoroughly. Not really. First, I went to Armo's site, and looked it up. The forums were very helpful for finding a thorough manual. So, the basics out of the way, I took it out to my garage to play around with it.
When I used it, I was amazed at how well it shot. I initially got around 20 shots per 12g, but when I chrono'd in, it was shooting around 350. This is a problem common to the Zeus, so a few clipped rings later, and shooting around 290, I was getting nearly 30 shot per 12g. The marker was also amazingly tight. I was getting very consistent groupings and velocity. The spikes were few and far between. When I took the marker out on the field the first time. people were surprised to see a side arm. Many asked me if it leaked, or said it was a waste of time. The first game, I didn't use it, and was disappointed at how heavy it was, if it wasn't going to be used often, so on the second game I put my 98c aside, and went with just the Zeus. And a spare 100rd tube. I played this way for the rest of the day, and was amazed at how much easier it was to move and tuck in behind trees and bunkers. I've been using it as my primary since.
There are very few. Some people have had trouble with cupseal, but this problem has largely gone away, now that Armotech is making it's own Silver star cupseals. Also, If you're planning on using the G2 as a dedicated side-arm, be prepared to be carrying some extra weight, it's HEAVY. Another problem you'll face is loading it. Tis is fairly easy if you have a healthy supply of 10rd tubes, or are VERY efficient on paint (one shot, one kill) but can still be a drain if you need to provide a healthy spray of paint to keep a man down. The QC also helps. The last major problem this marker has is the manual that comes with it. It sucks. Armotech knows this, and very kindly provides a new, very in-depth version at their website in .pdf format. Don't complain, if you're reading this it shouldn't be that hard to get.
All in all, this is an exceptional marker. It needs a bit of TLC, which may or may not take some practice, especially if you've used a STBB before. They aren't as durable as a 98c, but they're certianly not going to die on you if you neglect them a little. A great marker made by a great company.
www.armotech.us -- Armotech's website
www.armotech.us/forum -- Their forum. Great source for tech support.
Those websites don't seem to work anymore. Is Armotech done with? I got a miltec paintball pistol (G2). Very similar name, and the pictures are practically identical. MilTec doesn't have a website, which makes me a little leery and confused in general. If you know anything about this let me know.