Reviewer:
Rowan Hardy
from Indialantic , FL United States
I got the bolt a few weeks ago. Played 2 days and put about a case and a half through it. Like others have said i ran into a bunch of issues. Bolt stuck forward intermittently so with the eyes turned on, gun would stop shooting. Eyes off Chop paint like crazy. Played with the dwell and several types of oil/grease. I just played with the old bolt. I'm convinced it has to do with the back o-ring on the golden bolt, just not sure the size. when it works the gun shoots beautifully.I see better range, accuracy, and quiets the gun. I read on a forum that someone ground down where the o-ring sits on the bolt. I wouldn't do it but it seemed to work for him.
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With new sticky bolt technology!
July 17, 2012
Reviewer:
Dave L
from Highlands Ranch, CO United States
Got this for my G4 and after putting this in I ran into many issues. Played with dwell, more/less lube, etc. to try and get it to work better but it just kept sticking... put the original bolt back in and it hums like a tiger again. Perhaps there's a way to make this work like a dream, but I couldn't find it.
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G3 - SPEC-R
June 10, 2012
Reviewer:
Anonymous Person
from Germany
Awesome upgrade for the G3 Spec-R. adjusted my dwell, ABS Dwell and pressure setting back to factory before installation. Once installed with a thin layer of goo, I toyed with the three settings again to get them tuned and WOW what a difference. A lot less kick, much quieter, and I save almost 500psi each game. I'm a heavy paint thrower so I run though my die rotor, and 6 dye lock lid pods before i'm even close to being out of air. (68/4500 crossfire tank)
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Really Does Work....
February 11, 2012
Reviewer:
Brotha from Another Planet
from United States
Running a DP G4 and tried it out.
First, it really does increase the G4 efficiency. You will need to tweak your dwell settings. Drop it until the gun velocity drops to find the bottom then move it up one. One of the fields we use only fills to 3000 so the Bolt engine makes a difference as far how much paint I can shoot with a 3k fill.
As far as durability, I've played 3 months with the bolt and nothing wrong with it. So far so good.
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Not good!
September 11, 2011
Reviewer:
Sergiy Prudkyy
from Dnipropetrowsk, Dnipropetrovsk region Ukraine
This is a very bad bolt! He burst in the fifth game! I do not advise anyone to buy it! Lifetime warranty - does not work, probably due to the fact that I live in Ukraine!? I offered to send him to the U.S. for $ 50 and wait for an answer ...... On the forums, I learned that this problem is not just me.
Not sure what the issue is yet 
With new sticky bolt technology! 
G3 - SPEC-R 
Not good!