Videos tagged with Polygonal Rifling

This comprehensive review of the HK MK23 SOCOM, presented by Garand Thumb, details its development for USSOCOM trials and its robust design. The video highlights its exceptional reliability under extreme conditions, accuracy potential (even at 300 yards), and unique stealth capabilities achieved through manual slide locking and 'wet shots' with its suppressor. Expert insights cover its .45 ACP caliber, dual recoil spring system, and the functionality of the Wilcox Nightstalker LAM.

This expert review of the SOLGW 11.5” MK1 CAR upper receiver, conducted by Preston Moore, details its build quality and performance through rigorous testing. The analysis includes detailed technical specifications, internal and external measurements using precision gauges, and extensive range testing with 30-shot groups. The barrel demonstrated consistent accuracy and velocity across various ammunition types, highlighting its potential for sub-MOA performance.

Chris Baker of Lucky Gunner Ammo provides an in-depth review of the Spohr .44 Magnum N670, a premium revolver with an MSRP of $4,200. The review highlights its exceptional mechanical accuracy, innovative features like an adjustable coil mainspring, and its position as a high-end alternative to modern production revolvers. Baker, a recognized subject matter expert, emphasizes the firearm's technical excellence and rejection of lowered manufacturing standards.

This video features a range test and review of the RS9 Vampir, a 9mm DA/SA service pistol designed for Bosnian anti-terrorist police. The pistol, manufactured in the Republic of Srpska by TRB and imported by TCH Arms, is noted for its lineage to the Zastava CZ-99 but with modern updates like a shared decocker/slide-stop, polygonal rifling, and 18+1 capacity. The review highlights its similarity in feel to the SIG P226 and CZ REVOLVER 01, though it mentions a stronger single-action pull. Downsides include a high price point of $1,400, no optics-ready option, and a limited aftermarket.

This expert-level guide details the setup of the Sons of Liberty Gun Works MK1 AR-15, a rifle designed to Tier One unit specifications. The presenter, an experienced firearms instructor and authorized dealer, walks through the installation of various high-performance accessories, including an EOTech optic, Surefire light, HUXWRX suppressor, and specialized mounting systems. The focus is on optimizing the rifle for performance, comfort, and reliability in demanding scenarios.

This video reviews the Noveske Rival V2 AR-15 barrel, focusing on whether its premium price is justified. The review includes a detailed breakdown of specifications, a bore scope inspection, accuracy testing with multiple ammunition types at 100 yards, and velocity and stability analysis using specialized equipment. The presenter highlights unexpected build quality concerns, such as chamber finish and brass scarring, despite the barrel's excellent bore, rifling, and crown. The performance is compared against other SPR barrels, with results presented on a leaderboard. The video encourages viewer engagement and subscription for future in-depth reviews.

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.

The HK USP Expert, a 1998 long-slide variant, excels in accuracy and reliability, especially with its 4.5lb match trigger and 5.2-inch barrel. Despite a high bore axis and dated ergonomics, it proved durable through 1000 rounds, only faltering on poor ammo. Its high price and limited capacity are drawbacks compared to modern firearms, but its 'cool factor' and match-grade performance keep it relevant.

This review of the Danuvia Forte VD-01, presented by Jonathan Ferguson of the Royal Armouries, highlights its unique helical magazine design, capable of holding 33 rounds of 9mm ammunition. Despite its 'brick-like' appearance, the pistol features a Lothar Walther barrel with polygonal rifling and a simple blowback action. Production was limited, making it a rare collector's item.

The Zastava M21 is a 5.56x45mm Kalashnikov-style rifle optimized for the caliber, featuring a gas-piston system, cold hammer-forged chrome-lined barrel, and a stamped RPK-style receiver. It offers good ergonomics with an ambidextrous safety and folding stock, and its design allows for excellent recoil control, even in full-auto fire at 680 RPM. Accuracy is respectable, with military ball ammunition grouping around 3 inches at 100 meters.

The vz.82 and CZ 83 pistols were developed by Czechoslovakia to modernize its sidearms, with the vz.82 intended for military use in 9mm Makarov and the CZ 83 for export in .32 ACP and .380 ACP. Key features include polygonal rifling in the military version for a unique high-velocity load and a robust, simple disassembly process. The series was a significant ergonomic and technical improvement over previous models, achieving nearly 500,000 units produced.

The HK USP 45 is lauded as one of the best .45 ACP service pistols, praised for its legendary reliability, accuracy, and durability, stemming from its Mark 23 heritage. Key features include a cold hammer-forged barrel with polygonal rifling and an O-ring for consistent accuracy. Despite its strengths, the proprietary accessory rail and mediocre trigger are noted drawbacks.