True - the Daystate Airstream is the only one I know of. The ones I have made have worked well - back vented ones in particular give good down range suppression but do sound a bit louder than some people expect behind the muzzle -> air+energy = noise directed back towards the shooter.
It is a kind of hobby experimenting with what can be done.
Well the gun and mod eventually delivered to the RFD had a little play over the weekend and how great the mods are on this little gun and how great the gun points and shoots well happy up till now if anyone is thinking about getting one go for it --you might think they are a little heavy? but the point and balance of these is great they adjustable butt pad makes it great for getting your head right with your scope I read that some were worried about the reach but this is not a issue that I have noticed and the swift stumpy makes it very quite I went for a .22 calibre and it seems to shoot FTT pellets and Crossman premier pellets with no issues I was getting pellet on pellet at 30 yrds with ease one thing is to make sure you give the barrel a good clean before use as there is a lot of oil in there from manufacturing the walnut stock looks great but after a couple of coats of Philips walnut prep oil looks even better Thanks to all the members who helped ATB
Whoops I spoken to soon accuracy went out the window pellets grouping in a inch then some dropping low and left slightly checked the power it was going between 10 foot pound and 11.5 I have spoken to the importer its going back tomorrow sick as a chip but hopefully it will be sorted
Ive got a kral silencer came with my np02. Its basically a hw copy. Very effective and still not too long for hide/barn use. I tried my huggett bellita on the np02 but it was noticably louder and the shorter length didnt really float my boat as much as i thought it would. Hope that helps bud
Initially I put a Belita on mine , looked good but not that quiet.
I now use either one made by Frog or a HW one , nothing in it .
Value for money. Frog wins every time .