Remington Model 550-1 .22 LR Semi-Automatic Rifle, 24" Barrel, Grooved Receiver
The Remington Model 550-1 is a post-war classic known for its Williams floating-chamber system that lets it cycle .22 Short, .22 Long, and .22 LR interchangeably. This full-size, blowback-operated rimfire holds up to 15 rounds of .22 LR (or 22 rounds of .22 Short) in its tubular magazine and features an early 3/8" grooved receiver now fitted with aftermarket tip-off scope blocks. Its 24" carbon-steel barrel, walnut stock, and open sights give it the familiar look and feel prized by rimfire enthusiasts and collectors alike.
Condition
Overall Condition: Fair – Shows extensive signs of prior use and handling.
Bore Condition: Fair – Generally clean, some residue or smudges, slight corrosion.
Bore Rifling: Fair – Worn rifling, slight loss of definition.
Specific Condition Notes: The rifle remains functional. There is noticeable carbon buildup throughout the action, and the exterior of the barrel displays areas of pitting and surface rust.
What’s Included
- Remington Model 550-1 .22 LR semi-automatic rifle
- Aftermarket 3/8" tip-off scope blocks installed on the grooved receiver
Remington produced the Model 550-1 between 1946 and 1970, and most examples, including this one, were shipped without serial numbers due to production practices of the era.
The floating-chamber design vents a small portion of gas to drive the bolt, giving the rifle the unusual ability to cycle the full range of .22 rimfire cartridges without adjustment. This versatility made the 550-1 a favorite for economical plinking and small-game hunting.
A 24" carbon-steel barrel delivers solid sight radius for its open sights: a dovetailed blade front and a drift-adjustable folding leaf rear. The blued finish on the barrel, receiver, and small parts is worn but intact, matching the rifle’s working-grade character.
The walnut stock features a semi-pistol grip and an oil/varnish finish. Length of pull measures 13.75", providing a comfortable fit for most adult shooters.
Factory-cut 3/8" grooves on the receiver—an early adoption for rimfire optics—are now augmented with tip-off blocks, letting the next owner add a period scope or modern red-dot with ease.