B2K, 10" Dye Aluminum, Benchmark Drop Forward, Dye Stickies, Sonic Ball Detent, 12 Volt Revvy with Wicked Air Sports Turbo Rev Board and Vortex Impeller, Eclipse Low Pressure Reg Adjuster, Sonic LPR Gauge, PMI 68/3000 Carbon Fiber Tank
In this order --> Barrel, Grips, Fast Hopper, and Sonic LPR Gauge. This gun needs to be as close as 90 PSI in the low pressure reg to operate properly and the LPR gauge from macdev.net (sonic) is a great way to do it.
Shoots fast and consistent with stock regs. Adjustable trigger pull gets it down to a couple of millimeters or less. Low pressure makes it shoot fast and quietly. Very little kickback. Light and well balanced with shorter barrels. Lots of upgrades.
Just like everyone else told me, the stock grips are uncomfortable and the stock barrel only works well with small paint. Not a big deal because grips and barrels are easy to upgrade.
You must have a fast hopper for this marker. I had a 12 Volt Revvy with no X-Board and it just couldn't keep up. The WAS Turbo Rev Board and Vortex impeller made a huge difference. The stock regs are very good and very consistent. However, many Bushy owners end up replacing them but mine seems to work very well without an aftermarket reg.