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6-48 Tap, Plug
Irwin/Hanson brand. 6-48 Scope/Sight Gun Tap, 3 flute, Plug type, bright Carbon, Hand Tap.
Plug Gauges for Forcing Cones in Revolver Barrels$6.00
By simply slipping the Plug Gauge into the barrel throat, it’s possible to tell at a glance when you are approaching the correct diameter. Warns you before you go too far. Also valuable as a diagnostic tool for guns brought in with accuracy complaints, (designed for chamfers cut with our tools – may not give a correct reading on guns with other degrees of chamfer). Each gauge is self-piloted, precision-ground, hardened and stepped to show minimum and maximum optimum diameters. 11° and 18° Gauge measures both chamfer angles.