Venturi Removal

To expand on what Lando was talking about above:

To save on air using a venturi bolt, the venturi piece in the bolt can be taken out to create a more free flowing design.

Step 1. Take the bolt out of the gun and disconnect it from the striker.

Step 2. With a pair of needle nose pliers firmy grasp the star shaped venturi piece from the front of the bolt.



This step is OPTIONAL, not everyone may need to do it: Some venturis were screwed in with loctite. If this is the case with yours, and you can't get the venturi out, use a lighter tp warm up the bolt for a minute or two to melt the loctite. Be careful, because the whole bolt will be hot. Either use an oven mit, vice, or clamp it down to hold it. You may want to cover the parts you are going to clamp or vice with a cloth to prevent scratching. BEFORE HEATING TAKE OF ALL O- RINGS! The stock spyder bolt has two or three O-Rings. If you don't take them off before heating they will melt onto the bolt. Heat on the red spot indicated in the picture here:



Turn the venturi piece counter clockwise until it comes out. Make sure you have a firm grip. Also, put the bolt down against a table with the pin stopping the bolt from rotating if you can't get a grip on the bolt.



I suggest keeping the venturi after removal just in case:



The bolt will now look like this from the front. Notice how much space is in the bolt after the venturi wa taken out.



Put the bolt in the gun and put everything back together. You will have a more air efficient marker because the bolt will have a better flow. You will need to turn down the velocity of your marker because of this mod.