Shocktech, Starfire, all kinds of different aftermarket bolts
E-Grip w/ W.A.S Board
J&J Edge Barrel Kit
Core 11 Stage Expansion Chamber
PMI Remote Line
Pure Engergy 20oz Co2
Easy to install
Velocity Scew is a bit tight
EDIT- Cyclone Misfeeds
EDIT- Air Issues (see edited review)
First off, after doing the research...something needs to be pointed out. Many reviews are several years old and discuss the "older" version of this combo. The Powertube/ Bolt combo is very different from that origional release. DoP has done several things to improve the design. Most obvious is the Delrin Bolt in favor of the older aluminum/teflon bolt that many had issues with. Many older reveiws comment on a problem with sliding the tube in, but most of the newer reviews say that this isn't and issue. This is also an improvement on DoP's part so it would seem (PLEASE SEE EDITS)....
So, moving forward...
Simple upgrade. I wasn't thrilled that the velocity scew is much harder to turn on mine then the stock one. Installation is very easy...10 mins if your versed in A-5 teardown. I wouldn't say I noticed a change either way at this point, but I know many Tippmann users in the Pacific NW swear by this bolt/ tube combo alone. I bought it based on that and a local shop I go to recommended it over the others based on the positive feed back they have recieved.
The added durability is a plus, though I have never cracked a stock tube. Even with my WAS board set on "Turbo" in 40 degree weather and shooting fast enough that ice actually formed around the top of my Co2 tank (yikes!).
I noted that with mine, the stock bolt will NOT work with the DoP tube...the bolt is to small diameter to slide over it.
EDIT 3-3-07: Okay, so after using it for a month, I have run into problems! My velcoity would often climb...and even with a spring kit, I couldn't get it lower than 320 fps at times (thus sidelining my A-5). Also, under heavy fire about 350-450 shots into a 20oz the cylcone feed wouldn't cycle?!?! And to top it off, the marker would act like it was low on air and I would only be 400 shots into the tank (3 documented cases of this!). SO what did I do? I reinstalled the stock tube and bolt while my friends played a game...the result? My A-5 didnt have ANY of these problems and shot like a dream. In fact, that Tank I thought was empty? Nope, marker shot with it PERFECTLY. The only thing I changed was the bolt and tube, thus the only thing that could have been causing these issues had to be the those. I am really sad, because I really wanted this product to work. I previously rated it a 10 because initially it really seemed to work great...but do to the circumstances I can not justify anything even close to that.
EDIT 3-3-07. Stick with stock internals. Studies show it is the best, the other pro shops I go to say the stock internals are the best, and my personal experience now opens my eyes to the fact that, YES...stock is ubah. $30 bucks avioded here and put it into your cyclone feed or trigger.
2 out of 10
Last edited on Saturday, March 3rd, 2007 at 7:26 pm PST