Marlin Glenfield Model 20 .22 LR Bolt Action Rifle – 1976 Micro-Groove, 22-Inch Barrel, 7+1 Capacity
Produced in 1976 and stamped with the JM proofmark, this Marlin Glenfield Model 20 offers a lightweight, steel-receiver bolt action chambered for .22 Short, .22 Long, and .22 LR. A 22-inch Micro-Groove barrel, classic birch Monte Carlo stock, and factory scope grooves make it a practical small-game and target rifle with collectible Glenfield character.
Condition
Overall Condition: Fair – showing extensive signs of prior use and handling.
Bore Condition: Good – clean, well-maintained with minor wear marks.
Rifling Condition: Good – intact, well-defined lands and grooves.
Specific Condition Notes: The blued steel surfaces display scattered scratches and blemishes, with light areas of rust and shallow pitting on exposed metal. The hardwood stock shows handling marks consistent with regular field use. The bore remains clean and shiny.
What’s Included
- One 7-round factory steel detachable magazine
Marlin’s Micro-Groove rifling gives the 22-inch barrel 16 narrow lands and grooves, helping standard .22 loads grip the bore efficiently while keeping fouling low. The crowned muzzle preserves accuracy by protecting the rifling at the bore’s exit.
A steel receiver with a 3/8-inch tip-off rail accepts rimfire scopes without gunsmithing. For iron-sight use, the rifle carries a ramp front blade and an elevation-adjustable rear leaf.
The Glenfield line’s birch Monte Carlo stock includes pressed checkering and the signature squirrel medallion. At roughly 5 pounds and with a 13.5-inch length of pull, the rifle balances easily for plinking, small-game hunting, or introducing new shooters to bolt-action fundamentals.
A two-position tang safety is quick to operate and keeps the shooter’s thumb on the bolt line. The seven-round detachable magazine feeds .22 Short, .22 Long, or .22 LR, with an extra round loaded directly into the chamber if desired.




