Sons of Liberty Gun Works
Sons of Liberty Gun Works' SPR barrel uses 416R stainless steel with a .223 Wylde chamber for tight groups with both .223 and 5.56.
The Sons of Liberty Gun Works Precision SPR V2 barrel is purpose-built for accuracy-focused builds where precision is the paramount concern. Manufactured from 416R stainless steel, this barrel uses the same material found in high-end precision rifles, offering superior accuracy potential compared to standard chrome-moly barrels. The .223 Wylde chamber provides the best of both worlds, accepting both .223 Remington and 5.56 NATO ammunition while delivering match-grade accuracy with .223 loads.
Each barrel features polygonal rifling with a three-groove, 1:7 twist bore that stabilizes heavy match bullets exceptionally well. The SPR (Special Purpose Rifle) contour provides the rigidity needed for consistent accuracy while keeping weight reasonable for practical field use. With a black oxide finish and 5/8x24 muzzle threads, the barrel accommodates both standard flash hiders and precision muzzle brakes commonly used in competitive and long-range applications.
Real-world performance confirms the precision pedigree, with users routinely reporting half-MOA groups with quality match ammunition. While the stainless construction means a shorter service life compared to 4150 CMV chrome-lined barrels, SOLGW's warranty still applies. The tighter gas port sizing (.072" vs .076" on standard barrels) contributes to smoother operation and reduced wear on components, making this an excellent choice for precision shooters prioritizing accuracy over high-volume durability.
Add the SOLGW Precision SPR V2 to your build and see how it enhances your platform.