Here's my Tek Clip, which I have already modified. Fortunately, these mods are simple enough that you can tell what I have changed. Now let's open this sucker up...
Our main area of attack is in the green area, where the plunger tube attaches to the space behind where the shell sits. When I picked this up, I noticed that it had a very flimbsy connection that just slid right off, which would let a lot of air escape on firing.
When you open up yours, you'll find a nub with a small O-ring on it. To improve my seal, I wrapped the whole thing in teflon tape. And since it's not a moving joint, feel free to really wrap it on there to make sure the connection is good and tight. Just make sure you don't accidentally cover up the hole in doing so.
The last two things I did was improved the plunger seal and add another spring. To improve the seal, I just put a wrap or two of electrical tape around the plunger head, put the o-ring over top of that, and applied a liberal coating of lubricant (I used some o-ring grease kept with my pool supplies, which seems to work very nicely). The spring is stolen from an RFR, and is threaded through the original spring to fit.
All told, I got pretty decent ranges out of this thing. The average shot was comparable to my modded NF (AR removal and an added spring), which is around 45 to 60 feet level. The only problem is priming the gun, which requires me to hold the gun differently in order ot get the leverage to pull back the slider.
