Originally Posted by Blitzed
I dont understand why you wouldnt just get an inner barrel that would fit the outer barrel?
It's an accuracy booster.
The reason why im asking is because I want to easily swap out the upper receiver/front end of the gun according to the situation. If i add a longer barrel, then im going to have to change the cylinder in the gear box as well which can be a pain/unpractical before games. I know that i need to match the clinder with the inner barrel length.