Parker D grade Hammer Gun

[Dean Romig]

Hi Calvin - Keels are triangular steel alignment pieces about two inches long which are placed under the top and bottom ribs to 'align' the rib at intervals along the length of the barrels before the soldering process. If the barrels are cut two inches or more by an amatuer he generally would not have botherer to resolder the keels back in under the ribs. In the case of this gun it is plain to see that the keels are in place under the ribs - otherwise you would only see the dark gray solder there.