Remove all air and paint prior to doing this modification. Read the instructions through. Make sure you have an understanding on what is involved in doing and what is needed for a trigger modification. If you attempt to do any of the home modifications listed on this site, I am not responsible for any damage done to, or from, modifying your marker. Also, by doing any of these modifications, you will void warranty of the marker. Kingman does not support the home modifications that I share.

All you need is a 3/16" drill bit. Take off your vertical adapter and remove all of the gizmos (LPC, regulator/x-chamber, and valve pin assembly). Also, remove any o-rings.

Now, look down the adapter from the LPC end. See that hole? Drill that out (picture above). Careful you do not damage the threads for the LPC. I have heard of some people drilling from the other side and find it to be easier and will keep you from damaging those threads. Drill all the way through, from valve area to LPC area. Take it slow and take your time.

Rotate the adapter 90* so that your looking down the ASA (picture above). Inside the ASA is a hole. Drill that hole out and do not go any further.

While your drilling holes bigger, I will suggest that you drill out the stock Kingman bottom line if you are using it. This is basically the same concept. Drill out the hole to make it bigger.

If you have a regulator, do not drill any of the holes out on the regulator itself!

Clean out the metal shavings and get rid of any burs. Wash with water if needed. The VA is aluminum, it will not rust with water. Re-attach everything and reassemble the marker. You're done!

You could try drilling more holes. This too will increase the airflow. Do this only if you feel comfortable using a drill. Where to drill? The 32degree and Bob Long have there holes on the opposite side of the ASA. The hole running from the LPC straight to the valve is merely a larger hole than 3/16". Be creative.

Recently, I have been receiving emails that the holes are already 3/16". Could it be that Kingman has read some of my articles? Maybe. The most recent post I received is that the VA's are coming with two holes in the ASA portion. This resembles the Bob Long and 32degrees holes in their VA's. Coincidence?

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