Green Mountain 12.7” AR-15 Barrel Review

This comprehensive review of the Noveske Afghan 14.5-inch AR-15 barrel, presented by Preston Moore, details its technical specifications, physical inspection findings, and extensive range testing. The barrel features a cold hammer-forged, chrome-lined bore built to M249 specifications, a mid-length gas system, and a 1:7 twist rate. Performance analysis with various ammunition types reveals its strengths, particularly with heavier match loads, while also noting characteristics like a slightly over-gassed nature.

The Nylaug project offers an affordable 3D-printed receiver for Steyr AUG parts kits, significantly undercutting factory prices. Utilizing Nylon filament like Polymaker PA6-CF20 is crucial for durability against heat. The build allows for common AR-15 barrels and trigger conversions, improving the AUG's ergonomics and trigger pull.

This video provides a detailed review and performance analysis of the Red Right Hand LLC 20" LMG HBAR Nitride Barrel for the AR-15 platform. The reviewer covers the barrel's specifications, conducts an in-depth inspection including gauging and headspace checks, and presents borescope footage. The performance testing includes 30-shot group testing with various ammunition types (Federal Gold Medal 77gr SMK, Federal Gold Medal 69gr SMK, Hornady 73gr ELD Match, Winchester M193) and analyzes velocity data using a Garmin Zero C1 Pro, rifle stability with a Mantis X10 Elite and Shooter's Global SG Pulse, and group measurements with Ballistic-X. The review highlights the barrel's build quality relative to its price point, excellent gas port sizing leading to smooth recoil and reliable function, and consistent, predictable performance. A comparison with a future chrome-lined version is also teased.

This video features a review of the Faxon 11.5" 5.56 Gunner Barrel, highlighting its lightweight design for suppressed shooting. The description provides detailed specifications including barrel material (4150 CMV), rifling type (Button Rifled), caliber (5.56 NATO), twist rate (1:8), length (11.5"), profile (Gunner), gas system (Mid), finishes (Nitride), muzzle thread (1/2-28), gas block diameter (.625), and barrel extension (M4). It emphasizes the barrel's value, in-house manufacturing, stress relief, air-gauge testing, 11-degree target crowning for accuracy, and magnetic particle inspection. The creator advises using an adjustable gas block due to the barrel's shorter dwell time and larger gas port. The description also includes extensive affiliate links, discount codes, and social media contacts.

This review details the BCM Enhanced Lightweight (ELW) AR-15 barrel, focusing on its accuracy performance with various ammunition types at 100 yards. The barrel demonstrated good practical accuracy, with groups ranging from 1.125" to 1.5". Technical specifications highlight its 4150 CMV steel construction, 1:7 twist, and lightweight profile designed for heat dissipation and muzzle balance.

This "New Products Week in Review" video from January 19, 2017, features Product Manager Paul Levy showcasing several new firearm-related products. The review highlights AR-15 carbine barrels in 12.7" and 14.7" lengths, both with a 1-12 twist. Additionally, it introduces the AR-15 Saber Drop-In Single Stage Trigger, a 34mm 1.5" 0 MOA Quick Detach ISMS scope mount, and two Key-Mo Adapters designed for Omega and Saker suppressors. The video provides a direct link for viewers to learn more about these new releases.

This extensive 15,000-round test reveals the surprising longevity of a Criterion CORE series AR-15 barrel. Despite significant internal wear, including fire cracking and erosion, the barrel maintained respectable accuracy, particularly with 77gr handloads. The test highlights how barrel degradation impacts ammunition sensitivity and emphasizes the importance of rigorous testing methodologies.

This YouTube video thoroughly tests the accuracy of a Ballistic Advantage AR-15 barrel, specifically evaluating if it lives up to its Sub-MOA guarantee. The creator shoots 30-shot groups with four different types of ammunition, analyzing the results to see if they meet the manufacturer's criteria. The video includes a detailed look at the barrel's specifications, a borescope inspection, the range setup, and a comparison of different ammunition performance, concluding with an overall results analysis and leaderboard. The central question is whether the barrel performs as expected for a Sub-MOA rated component.

This video offers an in-depth analysis and accuracy test of the 16-inch Sons of Liberty Gun Works SPR Barrel. It covers the barrel's unique features like its .223 Wylde chamber, 1:7 twist rate, 3-groove polygonal rifling, and 5/8x24 threads. The review includes a borescope inspection of the internal quality, micrometer measurements of external dimensions, and a detailed shooting assessment with three 30-shot groups using different ammunition types (PMC Bronze 55gr, Hornady 73gr ELD Match, Berger 77gr OTM). The analysis focuses on mean radius, group size, velocity, standard deviation, and shooter-induced flyers. A new metric, A-ZED (A-Zone Equivalence Distance), is introduced to practically assess rifle performance at range. The video provides data-driven insights into the barrel's precision and performance.

This video features a head-to-head comparison of two BCM BFH ELW (Enhanced Lightweight) AR-15 barrels. The creator conducts thorough inspections, including borescoping and headspace checks, revealing some unexpected findings. The testing involves shooting 30-shot groups at 100 yards with three different ammunition types: Winchester 55gr M193 FMJ, Frontier 68gr BTHP, and Federal Gold Medal 77gr SMK. Data is collected using a Garmin Zero C1 Pro chronograph and a Mantis X10 Elite, with results analyzed using mean radius and a custom A-ZED scoring system. The video aims to determine the consistency and real-world accuracy of these specific barrel models and whether any bore anomalies correlate with performance.