High Standard Sentinel R-100 .22 LR 9-Shot DA/SA Revolver, 6 Inch Barrel, Early-Series Hamden CT (1950s)
This early-series High Standard Sentinel R-100 stands out with its 6 inch barrel, 9-shot swing-out cylinder, and lightweight aluminum-alloy frame paired with steel barrel and cylinder. Notable features include the distinctive pull-forward ejector-rod release and early extractor star with nine drilled holes, with factory markings from Hamden, Connecticut. Its 1950s lineage ties to the J.C. Higgins Model 88 and the work of engineer Harry H. Sefried II.
Condition
Overall Condition: Fair condition, showing extensive signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific condition details: The original anodized finish on the aluminum frame shows significant thinning, high-edge wear, and scattered scratches. The blued steel barrel and cylinder display honest holster wear with minor surface oxidation. This example presents as a well-used but functional revolver.
What's Included
- High Standard Sentinel R-100 .22 LR revolver
The Sentinel R-100 is a full-size, 9-shot .22 LR revolver from the 1950s, combining an aluminum-alloy frame with a steel barrel and cylinder. Factory rollmarks read "HIGH STANDARD MFG. CORP., HAMDEN, CONN. U.S.A." and "HI-STANDARD .22 CAL."
This example features a 6 inch steel barrel with a serrated top, paired with a swing-out steel cylinder. It operates in double-action/single-action and uses an external hammer with a checkered spur for confident manipulation.
Its operating system is distinguished by a pull-forward ejector-rod head that serves as the cylinder release, eliminating a separate frame latch. The early extractor star pattern shows nine drilled holes, a detail associated with initial production.
Sights are straightforward and practical: a serrated, ramped front blade and a drift-adjustable square-notch rear blade set into a topstrap dovetail. Brown checkered plastic grip panels with a molded diamond motif complete the classic rimfire layout.