Very Accurate Barrel
This is a really high quality barrel. It's extremely accurate and I've had no failure to feeds so far during first 600 rounds. The fitment into my Gibbz G9 upper was very snug, but such tight tolerances will also help it maintain accuracy. Note that it is overall 8 inches from end to end, so since part of it sits inside the upper, be mindful when selecting hand-guard length. Overall very good product, especially for the price.