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Discussion Starter · #1 ·
Greetings fellow snipers,

I decided to make a quick, visual guide on how to turn your VSR-10 or Bar-10 "fanged" hop up arm into a "flat-pronged" one.

First, I grabbed a pen, and cut the pen tubing down to size using a kitchen knife . Make sure to get any burrs on the sides of the nub off with sandpaper or a knife. The cut tubing (red in the picture) should fit snug between the two fangs. It should look like this:


Next, I hot-glued the nub in place. Notice that the nub sticks out further than the fangs in the picture below. Therefore, we need to sand it so it sits evenly with the fangs.


Once you've done the sanding, it should look something like the picture below. You can even shape the nub into a sort of a concave shape to fit the BB.


That's all folks!
 

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@ whisper... You might find that now you have sanded the nub flush with the prongs and then remove the rubber nub you could end up back at square 1.

I use a long nubed arm and TDC with nubless rubber in mine, and when I spaced it originaly to the same thickness as the prongs it under hopped.

I had to space it a further 1mm to regain enough hop pressure ;)
 

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Discussion Starter · #6 ·
vindicareassassin said:
@ whisper... You might find that now you have sanded the nub flush with the prongs and then remove the rubber nub you could end up back at square 1.

I use a long nubed arm and TDC with nubless rubber in mine, and when I spaced it originaly to the same thickness as the prongs it under hopped.

I had to space it a further 1mm to regain enough hop pressure ;)
I will try my arm out and see if it needs more on the prong. I want to do a TDC, but I am little puzzled to where I should place the thread (will a nut suffice?) for the M3 screw. I'm guessing I should glue it on the outer barrel. Any suggestions?

WorstInFinLanD said:
How did you got the bucking inside out? It's pretty solid.
I rolled the thinner side of the bucking outwards which allowed the thicker side to come through the bucking hole. Basically, it's like trying to peel a banana with out ripping the outer layer being peeled. I hope that made sense LOL.
 

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Cheese Man said:
Just drill and tap a hole directly above the hop arm. Otherwise, you can glue a nut into the hole, but that is a lot more work making sure it fits right and doesn't get off-center.
Or you can glue 1 above the other as I did, you just have to make sure the thread you tap into the outer barrel is spot on square to start with.

Then just thread the nut on the bolt, screw the bolt into the outer barrel, and glue the nut in place, it is that simple..... it doubles the thread length but it does also stick out the barrel a fair way, I now have to run high scope mounts to clear the bolt head, no big deal concidering how fine the adjustments now are and how straight it now shoots ;)
 

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I know this is old, but it's a great mod and would be good for more people to see!

I didn't bother sanding it down though because I needed a little extra hop applied. Once I install the TDC adjuster I'll probably sand it down though.
 
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