I recently got the idea to quieten my A5 slightly by reducing the sound from the bolt hitting the valve pin. To that end, I purchased a packet of felt "furniture feet", like you would put on the bottom of chair/table legs. I took one of the smaller pieces (they are circle shaped) and stuck it onto the front face of the rear bolt.

My question to you is this: Could I expect any problems with it? (I have not fired the gun with air or paint since doing the mod). As I see it there could be a potential problem with the valve pin not being pushed all the way in since the striker surface is softer. Might I encounter velocity problems of any kind, or recocking issues? Would my cyclone or future R/T suffer for it?

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more than likley yes, basically you are putting an obstruction on the contact surface, plus, I seriously doubt this will have any impact on actual sound dampening since the primary source of "blast" comes from gas pressure escaping from the barrel.

Exactly, and with the felt inside the powertube you have a chance for some of the felt to get lodged inside the valve itself and disrupt the inner workings, possibly even destroy some o-rings.

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how to: quiet an A5

that will do. you can do that mod, and it does work abit but you dont want a very fury or cheep felt. I thought about using rubber too. in any case you would have to clean your gun often and keep an eye on the felt.

I dont believe you would have any volocity issues, as long as the felt stays out of the valve

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I get asked "Why?" alot. Why do you do this? Why did you do that? Why would you think of such a thing? WELL HERE IS MY ANWSER..... BECAUSE I CAN!!!!!!

I glued a really thin piece of rubber on to my bolt in a attempt to make it quieter. It seemed to be working. I could actually hear a difference. Then about half way through the game it got louder and the trigger would occasionly stick. I also had some problems trying to cock the gun. When I opened my A-5 up, I found that the rubber had completly broken up into tiny pieces which had gotten into every nook and cranny of my internals.

I wouldn't recommend using rubber even though people have suggested it(the co2 probably makes it brittle)

So... try felt then go and shoot a couple hundred rounds then see if anything bad happens. If you can actually hear a difference then I would keep it on. I had people commenting on how quiet it was...... for a A-5.

Ya I dont think thats such a good idea, good idea though, but I can definetly see problems later with that

get u a 1/8 or maybe even 1/4 inch thick piece of silicone, cut it in to an O shape so it fits around the contact surface that actually touches the pin, and super glue it on. I wouldnt suggest doing this mod with any kind of subtsance if you are running CO2 becouse it will either destroy the material or stiffen it, reducing its effectiveness.

so? did it work or not?

what if im using HPA? where did you get that piece of rubber?