The COLT Diamondback remains a standout example of late 20th-century American revolver design, blending refined ergonomics with a classic blued finish. Collectors and practical shooters value examples from the 1970s for their balance, sighting, and shootability.
COLT Diamondback is a 1978 Colt Diamondback 22LR Royal Blue with a 4″ barrel, 6-shot DA/SA action, Pachmayr black rubber grips, and adjustable rear sights—offered in Very Good condition. 
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Design and notable features
The 4″ barrel with a full lug and ribbed vented profile gives the COLT Diamondback a stable sight plane and additional weight up front for reduced muzzle flip. Front ramp and adjustable rear sights are factory-configured for precise aiming at varied distances. The blued finish retains a period-correct look, and Pachmayr black rubber grips provide a comfortable, non-slip hold suitable for range sessions or collection display.
The double-action/single-action mechanism makes the Diamondback versatile: DA for rapid follow-up shots, SA for pinpoint accuracy. The 6-shot capacity and .22 LR chambering are ideal for economical training and precision work. This example is noted as Made in USA, 1978, and is sold as firearm only; the listing states it has not been test-fired but should be expected to function safely unless otherwise noted. Price is listed at $1,799.99.
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Why .22 LR works well on this platform
.22 LR offers minimal recoil, affordable ammunition, and excellent accuracy potential from a 4″ barrel—making the COLT Diamondback a superb option for target shooting, fundamentals training, and small-game applications. The adjustable rear sight lets shooters tune point-of-impact to match common .22 loads, while the 6-shot cylinder provides ample capacity without bulk.
Purchase notes and ownership
This 1978 COLT Diamondback is offered in Very Good condition and includes the firearm only. Prospective buyers should note the seller’s disclosure that it has not been test-fired. With a listed price of $1,799.99, it represents a collectible-era revolver that functions well as a range gun or display piece. For current stock and checkout, Check current availability.
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People Also Ask
What makes this product stand out from competitors?
This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.
Is this product suitable for beginners?
Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.
What warranty or support is available?
The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.
How does this compare to similar products in its price range?
This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.
What maintenance is required?
Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.
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