Spyder MR1 - Stock
20 oz Pure Energy CO2 tank
Archon Gravity fed hopper (dual feed ramps, up to 11.6bps)
Oregon Scientific ATC-2K Video cam (barrel attached)
Rap4 T68 Gen1/2 M4/M16 Marker with M203 air conversion kit.
Extreme Rage agitated Hopper
BT Apex Barrel
Rugged and Durable
Easy field maintenance
Relative lack of accessories in comparison to other markers
A bit heavy
This marker was initially purchased as my secondary/backup marker, with the T68 mentioned above as my primary. After the number of issues I've had with the T68 (air issues, weight, e-grip/battery issues, lack of "acceptance" at some fields, etc.), I've switched over to the MR1 for my primary.
This marker is well packaged and comes with a standard tool kit and replacement parts and an ok manual. The fit and finish of the materials are top notch. The marker is easy to put together out of the box, even for relative newcomers to paintball.
This marker easily outperforms any rental marker and most store bought markers (in the same price range/genre) that I've come across. Shots are consistent and on target up to 75 ft with stock barrel. Shots will travel further than 75ft, but I've found with the stock barrel that those shots were rarely effective (read: ball breaks) or on target at greater than 100ft.
I did note some drop off in velocity during rapid fire, but I suppose you get that on most markers without an expansion chamber. From my testing, the hopper that came with the marker package only allowed a fire rate of 3 or 4 bps. The Archon hopper noted above allowed a much higher RoF (around 7 bps consistent, I'd say). Only chopped one ball out of about 1000 fired, and at the time it wasn't me firing the marker (a friend borrowed it for a round of play) so I didn't observe the conditions that led to the misfire. I did note that the adjustable feed neck was a bit skewed when the marker was returned to me, so that may have contributed to the problem.
Maintenance and Repair
Initial takedown of the marker is pretty straightforward. One pin for the velocity adjuster/spring assembly and another for the bolt. Clearing a chop/jam is a bit more involved, though. Especially if the ball is caught between the feed neck and the bolt, as was the case with the above referenced issue. Still, I had the marker back up and running within 5 minutes of recieving it, including cleaning the post-chop paint residue both inside and out. Did not have to refer to the manual for any of this (not that that's any great achievement, just a testament on how easy the marker is to work on).
Purchased this maker in a package that included a 20oz pure energy CO2 tank, Vforce armor goggles, Java 200 rd hopper, and Spyder butt pack with 4 smoke colored 140rd tubes. Total cost of package was $144. From what I understand you can pick up the marker alone for less than $90 at many online retailers. For what you get, I think this marker is an excellent value. If you play paintball three times, you'll have recouped what you would have laid out in rental fees and had a better paintball experience for it.
This is the only category that I've seen where this marker may be lacking. While I have noted a number of upgrades (barrels, hoppers, feed necks, etc), the sheer amount of upgrades available for other markers in this class (think Tippmann 98C's) far outpace what is available for the MR series.
I really like this marker. I think that the price is right for what you get, you can hold your own on fields during walk-on woodsball/recball and scenario games (probably wouldn't play tournaments with it, though). The marker is rugged, easily maintained, aesthetically pleasing, and comfortable to use. A bonus is that the marker comes with its own stock, which is quite useful. From my perspective, the only thing I see that detracts from this marker is the upgradability issue, which may improve over time. For that I'd rate the marker a 9.5, but since the numbers don't go into decimal placement for ratings, I'll give it a solid 9.