Interesting. I (like everyone else) have heard about cracked Flues frames for decades, but I've only seen it a handful of times and most of those were 20's. For years I've had a complete flues 16ga receiver that needs a set of barrels and forend, but I haven't run across a cheap set of barrels. For years I have guessed that cracked frames are relatively rare based only on how few sets of orphaned barrels are on the market! Depending on where this ends up, looks like a good candidate for the barrels