I believe the single line matting machine was used on vent rib guns with pins attached. I find it hard to believe that the pins were dressed and engraved after the installation of the rib. What is the opinion of other posters? Second question; why are some pins more visible than others? Is this a result of a repair job with the rib being separated from the pins? Every pin on Jared's gun is quite visible, although well aligned. Has this rib been removed from the pins at some time in the past? By the way, Jared's gun, the Puglisi gun, the gun pictured by Bruce Day, seem to be about all of the composite steel vent rib guns out there. There must be more. Where are they?
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