I'm planning on sticking some sorbo or silicon padding on the cylinder head to help dampen the impact of the piston hitting it. I probably won't port the cylinder as I'm afraid dirt and what not may get into the system. I'm still at a loss over the AEG barrel however, is the bar over the hop up window a concern? or should I file it down.
Also thanks for the advice so far, I'll keep you updated.
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