Thread: Greystone guns new 3k Suppressor

Originally Posted by JustKiddin

Thanks @Moa Hunter, are you referring to Greystone?

Going back to ODL, I had the same dilemma as @Mathias and asked Bert why not have an overbarrel design to keep our bush pigs shorter. He has moved away from overbarrel because of the results from ongoing R&D. Overbarrel portion of suppressor is less effective at suppression than the forward portion. By focussing on forward barrel he ends up with an overall smaller and more effective suppressor. If he goes to overbarrel it will need to be longer overall length and heavier to achieve the same suppression.

I expressed my concern about the strength of forward barrel design too, it seems weaker (by my logic anyway). He mentioned that every law enforcement and defense type organisation only uses forward barrel designs and they have to meet all sorts of drop and strength tests with the suppressed firearm being dropped onto hard surface from different heights and angles. ODL supply to some of them and they fly through the tests.

I would still prefer a shorter overall rifle but he is right on both counts above and I'm rapt how it works on my short rifle.

Sorry if this is taking your thread in a different direction @mcche171 but hope it is worthwhile for your overall decision making and you get one you are happy with.

Yes referring to Greystone. I haven't been over to Stus for some time but when I was last there he was Ceracoting barrels to get around the problem of carbonic acid erosion.
I did quite a bit of work on the whole suppressor subject for a subsonic gun. The volume of gas can be calculated from the powder burnt and it can all get quite complicated. As soundwaves will travel / bounce in straight lines the best designs will have a surface that breaks them up and scatters or distorts them.( Have a look at the guys using spin-on oil filters on youtube) This needs to be combined with as much gas capture and storage as possible, so the forward part captures and the rear muzzle part stores and slows the gas escape. In the end the bigger the better. I don't think that we have seen the best suppressor designs yet. A design that vents captured gas backwards from between each pair of capture baffles to the rear storage area would have to be better than these current designs that pressurize between each baffles set. There is a whole lot going on, sound waves, pressurised gas and heat. Putting a little bit of water in a suppressor really 'dulls' the first shot - the water takes heat and volume out of the gas and the steam distorts the sound waves.