Alright all you elite techs, I have a problem.
I've been working on guns for a few years, and do know what I'm doing. However one particular gun has me stumped.
I've got an Echo 1 XCR. And the gearbox keeps jamming with the piston back, followed by a loud screeching noise. I've had it apart so many times, and now I'm simply lost on what the problem could be.
Any help would be greatly appreciated!