How Well Does a Skinny Barrel Shoot? BCM Standard ELW 30-Round Groups

This review examines the Sons Liberty Gunworks Combat V2 13.7" button-rifled barrel, comparing it to its Cold Hammer Forged counterpart. The analysis includes detailed measurements, material specifications, and extensive ballistic testing with various ammunition types. The barrel is constructed from 4150 chrome moly vanadium steel, QPQ treated, and features a 1-7 twist rate and mid-length gas system, demonstrating competitive accuracy for its price point.

This review of the Sons of Liberty Gun Works M4 L89 AR-15 highlights its performance as a mid-tier duty rifle. The reviewer, who built this specific rifle at a Sons of Liberty armorer's course, praises its ergonomics, the quality of its components like the Liberty two-stage trigger, and its accuracy, achieving sub-MOA groups with certain ammunition. The rifle demonstrated excellent reliability over 500 rounds, feeding and ejecting flawlessly with various magazines and ammunition types. The review concludes that the L89 offers significant value, comparing favorably to higher-priced competitors, and is a strong option for those looking to buy or build a reliable and accurate AR-15.

This review examines the Sons of Liberty Gunworks 16" Liberty Fighting Barrel, detailing its construction and performance. The barrel features 4150 chrome moly vanadium steel, 5R rifling, and a DLC coated extension. Testing with various ammunition types revealed mixed results, with the barrel performing moderately with Federal Gold Medal 77gr SMK and poorly with Hornady 73gr ELD Match and PMC X-TEC M855. The reviewer notes some manufacturing artifacts in the chrome lining but finds the barrel extension fit to be firm.

This video provides a detailed review and performance test of a Sons of Liberty Gunworks (SOLGW) 13.9-inch Cold Hammer Forged Combat V2 barrel. The reviewer, Preston Moore, assesses the barrel's physical characteristics, including its construction from 4150 chrome moly vanadium steel, QPQ treatment, and gas system dimensions. He then conducts live-fire accuracy tests with three different ammunition types, documenting group sizes and velocities. The findings indicate that while the barrel exhibits good initial build quality, its accuracy performance was below expectations compared to other barrels tested under similar conditions.

This video provides a detailed review of the US Palm Cat 4 rifle, highlighting its unique features and design elements. The presenter, Brandon, discusses the rifle's MSRP of $1,300, aiming to offer a more affordable alternative to $2,000 rifles. Key features include a full M-LOK rail, 7075 T6 aluminum construction, a cold hammer-forged barrel, and a Hyperfire EDT trigger. The review also touches upon the rifle's claimed flash mitigation capabilities and a novel upper receiver lockup system designed for enhanced rigidity.

This video showcases several new and updated firearms released in 2026, covering a range of categories from PDWs and concealed carry pistols to AR-style platforms and precision bolt-action rifles. It highlights technical specifications, design features, and intended applications for each firearm, providing insights into advancements in firearm technology and manufacturing. The presenter offers a mixed sentiment, appreciating the innovation while noting the premium pricing of some models.

Preston Moore, demonstrating high expertise, provides an analytical assessment of a Criterion CORE series barrel after 15,000 rounds. He details significant internal wear, including throat erosion and fire cracking, using specialized tools like borescopes and erosion gauges. Despite the degradation, the barrel still produced surprisingly acceptable groups with specific ammunition, highlighting its durability and the importance of testing worn components.

This video provides an in-depth review and accuracy test of a Ballistic Advantage AR-15 barrel. The presenter, Preston Moore, details the barrel's specifications, including its Hensley profile, 16-inch length, mid-length gas system, and 1:7 twist rate. He conducts extensive live-fire testing with four different ammunition types at 100 yards, meticulously recording group sizes, velocities, and rifle stability scores using advanced equipment. The results are compared against Ballistic Advantage's sub-MOA guarantee, offering practical insights into the barrel's real-world performance.

This video provides an in-depth accuracy test of the Sons of Liberty Gunworks 16-inch SPR barrel, featuring unique polygonal rifling and a 5/8x24 thread pitch. The instructor conducts 30-shot groups with various ammunition types, meticulously recording data on velocity, rifle stability, and group size using advanced metrics like the A-ZED score. The results demonstrate exceptional accuracy, positioning the barrel favorably against competitors.

This video provides a detailed comparison of two BCM ELW (Extreme Lightweight) barrels, examining their manufacturing consistency and on-range performance. The presenter conducts thorough bench inspections, including gauging, weighing, and borescope analysis, highlighting potential manufacturing variations. Live-fire testing involves 30-shot groups at 100 yards with various ammunition types to assess accuracy, velocity, and consistency, offering insights into the practical performance of these lightweight barrels.