The terms "AR-10" and "DPMS 308" are often used interchangeably, leading to confusion among firearm enthusiasts. While both refer to .308 Winchester (7.62x51mm NATO) semi-automatic rifles based on the AR-10 platform, there are crucial distinctions to understand. This article will clarify the differences between these designations and help you make informed decisions.
What is an AR-10?
The term "AR-10" originally referred to Eugene Stoner's design for a larger-caliber rifle, intended to fire the 7.62x51mm NATO cartridge. This design predates the more famous AR-15. However, Armalite, the original manufacturer, didn't achieve widespread success with the AR-10. Therefore, "AR-10" today isn't a brand name but rather a platform designation—a family of rifles sharing a similar operating system and design philosophy to the original Armalite AR-10. Many manufacturers produce rifles marketed as "AR-10s," each with its own variations and features.
What is a DPMS 308?
DPMS (now known as DPMS Panther Arms) was one of the first companies to successfully bring a commercially viable AR-10 pattern rifle to the market. Their .308 rifles, often simply called "DPMS 308," became a benchmark, establishing the pattern many other manufacturers followed. They were notable for their affordability and reliability, making them a popular choice among shooters. However, DPMS didn't invent the AR-10 platform—they built upon the existing design.
Key Differences: Beyond the Name
The crucial difference lies not in the caliber (.308 Winchester) but in the specific design and manufacturing details between different AR-10 pattern rifles. A DPMS 308 is simply one example of an AR-10-pattern rifle. The core distinctions between a "generic" AR-10 and a DPMS 308 are subtle but can impact performance and reliability:
1. Receiver Specifications:
- DPMS Pattern: DPMS 308 rifles utilize a specific receiver design that has become a common standard, though not universally adopted. Other manufacturers might create AR-10 rifles using different receiver specifications, leading to potential compatibility issues with parts.
- Other AR-10 Patterns: Other companies like Armalite, LWRC, and others have their unique receiver designs, each potentially influencing the overall strength, ergonomics, and parts compatibility of their respective rifles.
2. Component Differences:
While many parts might seem interchangeable, subtle variations can exist in bolt carriers, firing pins, and other internal components. This means parts from a DPMS 308 might not always be directly compatible with another manufacturer's AR-10.
3. Manufacturing Quality & Materials:
Manufacturing processes and materials used vary considerably across brands. DPMS 308 rifles, at various price points, might have a different level of build quality compared to higher-end AR-10 rifles from other companies. This difference impacts longevity, accuracy, and overall reliability.
4. Features and Options:
Different manufacturers offer various features, such as different barrel lengths, stock types, handguards, and other accessories, resulting in a diverse range of AR-10 rifles tailored to various applications and user preferences. DPMS 308s were, and continue to be, offered in a wide variety of configurations.
Conclusion: Understanding the Nuances
The term "AR-10" is a broad category, while "DPMS 308" denotes a specific manufacturer's rifle within that category. When selecting a .308 AR-style rifle, understanding these nuances is vital. Don't solely focus on the name; research the specific manufacturer, model, and its features to find the rifle that best meets your individual needs and budget. Consider factors like intended use, accuracy requirements, budget constraints, and parts availability before making a purchase.
