Is the LMT 14.5” Piston Barrel Worth It? Full Inspection + Group Results

This comprehensive review by Preston Moore, an expert firearms instructor, details the inspection and rigorous 30-shot accuracy testing of a Colt 6520 16" pencil barrel. The analysis includes detailed measurements, bore inspection, and comparative performance data with Federal Gold Medal 77gr Sierra MatchKing, PMC X-Tac M855, and ADI World Class 69gr Sierra MatchKing ammunition, providing valuable insights for AR-15 enthusiasts.

This video provides a detailed review of the Rosco K9 16-inch AR-15 barrel, including its technical specifications, inspection findings, and performance testing with three different ammunition types. The reviewer highlights mixed results, with the barrel performing well with Federal Gold Medal 77gr but poorly with Winchester M193, suggesting potential ammunition sensitivity and heat-related degradation. The analysis offers valuable insights for AR-15 builders and shooters.

This video provides an in-depth review of the Centurion Arms 14.7-inch cold hammer-forged, chrome-lined AR-15 barrel. It details the barrel's specifications, includes a borescope inspection of the chamber, throat, and crown, and presents comprehensive range testing results with three different ammunition types. The review highlights accuracy data, velocity readings, and offers a comparative analysis against other barrels tested.

This review of the HK MR556 A4 highlights its performance as a civilian-accessible variant of the HK 416. The rifle is praised for its smooth shooting, minimal gas in the face, and impressive accuracy, achieving sub-MOA at 100 yards. Key differences from the 416 include a non-chrome-lined barrel and the absence of a full-auto bolt carrier. Downsides noted are its weight, price, and the stock, though the gas system offers extensive adjustability.

This video provides a detailed review and testing of a Criterion 16-inch HBAR AR-15 barrel. The presenter covers the barrel's specifications, conducts a thorough inspection including chamber and bore scoping after approximately 1,000 rounds, and performs range testing with three different ammunition types. The testing focuses on accuracy, velocity, and signs of wear, revealing interesting performance characteristics and potential pressure signs.

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.

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.