Fps question and Barrel lenght

facemelter

hello I have a couple of questions regarding what effect a barrel swap will have on fps, problem is i dont know how long the barrel i will be putting in is , or even how long the stock barrel is , , i'll be taking a stock a2 aug and converting it to a commando similar to this

http://www.specialunits.eu/images/Pakistan/Pakistan%20Commando%20%2803aug10%29.jpg

and this is the part on the outer barrel i will be using

http://shop.ehobbyasia.com/action-silencer-adaptor-for-marui-aug-series-14mm-ccw.html

so, what length barrel will i need to put in the aug , and what effect will this have on the fps , ?

thanks in advance

P_

King John The Last

I was thinking about doing the same thing. I never got around to it. I was thinking that a 363mm barrel would be just right. The stock barrel is 509mm. I dont know how much of a effect the shorter barrel will have on fps

T4RGET

it shouldn't have any real effect on FPS. However, over 450mm-500mm it is advisable to put in a non ported cylinder so your AUG may already have one, in which case you will need a ported one when replacing the stock barrel with a CQB version, as for teh length I have no idea, guess you'll have to experiment, you may get away with 363mm or go for the Raider's stock length which is in the 200-250mm region if i remember correctly

facemelter

hmmm was afraid of that !!! thanks for the help !!