T9 with bipod, handguard, scope, laser/flashlight, adjustable stock, and 12 gram co2
A combination laser/ flashlight. It will make life a whole lot easier and reduce the number of items sticking out of the marker.
Good bang for the buck
Extra magazines are kind of expensive.
I purchased the marker recently and to be absolutely honest I find it to be one of the best all around paintball guns that I have ever used. The process to turn the marker into a rifle and then back to a pistol is extremely easy and painless. All of the parts are solid and appear to be made of some of the best materials which in my opinion make it well worth the money. The only thing I wish is that it came with another magazine.
As a pistol, I experienced excellent accuracy. I fired the maker at three targets at different distances. One being roughly ten feet away, another being twenty-five feet away, and the last one being forty feet away. With all targets the pistol had a very small spread. The interesting thing was that I initially tested the marker with very old paint that was dimpled and it still was pretty accurate. Not one ball chopped despite my attempts to bring the marker to the point of chopping.
As a Rifle, I experienced a substantially higher level of accuracy. With everything on the marker and a fairly zeroed scope, the spread was a lot smaller. I experienced no chopping with the "bad" paint and the level of accuracy with the bad paint was still really good. It is important to take into consideration that accuracy comes from a combination of stability (stock and bipod), efficient use of air (the marker itself), and a good guide (barrel). All of these items in the right proportions make for a really good gun and the Tiberius Arms T9 Elite St has all of those features in the right proportions.
On the Field:
On the field the marker's accuracy and reliability really depend upon the weather. I noticed this immediately when a sudden drop in temperature caused the marker to spin balls in odd trajectories. The efficiency of the gun dropped substantially as well when the temperature dropped. In the morning (60 degrees) the marker was shooting around 25 balls a 12 gram cartridge after the temperature drop (55 degrees) the marker was shooting around 19 balls a cartridge. All in all the marker was pretty efficient in all the other fields. At first glance most people found that the marker looked very inefficient. However, during the games I not only used substantially less paint each round, I was substantially more accurate than everyone else who was for the most part using nitro/air.
In conclusion, the marker is made for the purpose. For those who want accuracy and do not need to be firing ten balls a second. You could be in the middle of battle and still be efficient because at the end of the day it is quality (accuracy) not quantity that counts in a game. I highly recommend this marker to anyone.