This Marlin manufactured first variation 22" long barrel in 22 LR caliber is for the earliest Western Auto Supply Co, / Revelation model 120 semi-auto rifle having a dovetail notch designed for mounting the first variation style front sight (sold separately). This barrel is in very good condition retaining most of its original blue finish with light wear and possibly a few specks of light surface rust. The bore is bright and rates excellent.  (file photos)