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The LMT Defense 20" Stainless Steel 7.62x51mm NATO barrel assembly delivers exceptional precision and longevity for long-range AR-10 builds, precision rifles, and designated marksman applications. Crafted from high-grade stainless steel with a match-grade profile, this 20-inch barrel features a 1:10 RH twist rate optimized for stabilizing heavier 168-175 grain projectiles commonly used in 7.62x51mm NATO and .308 Winchester loads, ensuring sub-MOA accuracy potential with quality ammunition. The stainless construction provides superior corrosion resistance and consistent performance over extended use, while the assembly includes a pinned low-profile gas block for reliable cycling and compatibility with LMT's quick-change MRP-H monolithic uppers or standard DPMS-pattern receivers.
This barrel assembly is engineered to LMT Defense's rigorous military specifications, offering flawless fitment, precise chamber dimensions, and a bright stainless finish that resists fouling and simplifies maintenance in demanding environments. The 20-inch length strikes an ideal balance between velocity for extended effective range—typically achieving higher muzzle energies than shorter barrels—and manageable overall rifle length for field or competition use. Whether paired with a suppressor for reduced signature or configured for open long-range shooting, the assembly maintains tight tolerances and repeatable zero retention, making it a preferred choice among professional shooters, PRS competitors, and tactical operators who demand uncompromising reliability and accuracy from their 7.62 platforms.
Built for versatility and durability, this LMT barrel assembly excels in multi-role configurations, from duty rifles to dedicated precision setups, with seamless integration into LMT MRP-H systems for rapid barrel swaps or caliber transitions. The stainless steel material enhances thermal stability during high-volume fire, reducing point-of-impact shifts and extending service life compared to standard chrome-lined options in precision applications. This premium component represents LMT Defense's commitment to excellence, combining match-grade craftsmanship with battle-proven design for shooters who settle for nothing less than the best.
Precision-engineer your long-range .308 or 7.62x51mm rifle with the LMT Defense 20" Stainless Steel barrel assembly—shop this elite match-grade component now and add it to your build at Battlehawk Armory.
Specifications:
- Weight: 4.05 lbs
- Caliber: 7.62x51mm NATO
- Barrel Material: Stainless Steel
- Operating Method: Direct Impingement
- Rilfing Twist Rate: 1:11.25"
| Manufacturer | LMT DEFENSE |
| Model | 20" 7.62 NATO Barrel |
| UPC | 815415011592 |
| SKU | R-LM308B220S |
| Width | 4.0000 |
| Length | 25.0000 |
| Height | 4.0000 |
| Weight | 5.0000 |



FFL Required