A probable scenario but they do get mixed and matched (Flues tguard on an NID which didn't fit the inletting well). Flues guard is a startling bit of unaesthesia anyway; no "return" following the line of the rear trigger. But the wood is always good on the graded Flues doubles and the trap guns really are a poor man's decorative arts bargain imo. Here's the rear rib "ramp" on my 4e doublegun:





jack