Videos tagged with 4140 Steel

This video provides an unboxing and installation guide for the AntiMatter Scopeswitch, a scope mount designed to allow magnification adjustments without breaking the shooting stance. It highlights the mount's construction using 7075 T6 aluminum and 4140 nitrided steel, emphasizing its strength, low weight, and practical application for dynamic shooting. The video covers hardware details, installation steps including torque tips and optic alignment, and an on-gun demonstration of its functionality. Fitment notes address the 1.93" optical centerline, compatibility with 10.5" barrels (and recommendations for 5.56), and clearance with plate carriers. The Scopeswitch aims to improve target focus and support-hand positioning during magnification changes, making it suitable for compact rifles and modern tactical setups.

This "Gun Of The Week" feature from American Rifleman examines the CVA Cascade Long Range Hunter (LRH). The video details its features, designed for extended-range shooting and hunting. It highlights the rifle's turn-bolt action, 4140 steel receiver, three-lug bolt with a tactical knob, and thicker, fluted barrels with a radial muzzle brake and 5/8x24 TPI threading. The stock is rigid with an adjustable cheekpiece and length of pull, and the receiver sports a one-piece Picatinny rail with a 20-m.o.a. tilt. The rifle is chambered in popular calibers like .308 Win., 6.5 mm Creedmoor, and .300 Win. Mag., and comes with a three-round detachable box magazine. Testers found it to be a potent choice for long-range work with smooth operation and fast follow-up shots, noting its suitability for a wide range of shooters.

This video details the meticulous process of manufacturing rifle barrels at Green Mountain Rifle Barrel Co. It covers everything from sourcing raw materials like 4140 and 416R steel to advanced techniques such as deep-hole drilling, reaming, cut rifling, and button rifling. The production emphasizes precision, with critical steps like chambering and crowning highlighted for accuracy, and includes quality control measures like bore scoping and air gauging.

The Anti Matter Industries ScopeSwitch offers a revolutionary way to adjust LPVO magnification using a thumb slider, mimicking 'magic zoom' from video games. Tested rigorously, including being run over by a truck, it proved exceptionally durable. Field tests show it significantly speeds up target transitions and encourages more frequent use of intermediate magnifications, enhancing Positive Identification (PID) capabilities.

This video highlights a small but significant improvement from SOLGW (Sons of Liberty Gun Works) – a new grip screw for their AR-15 platform. The screw features a combo head compatible with both 3/16" hex drivers and flathead drivers, is constructed from durable 4140 Steel, and finished with a Black Oxide coating for corrosion resistance. SOLGW emphasizes their commitment to continuous fine-tuning and readily available parts, stating this screw will be included in all their firearms, lower parts kits, and offered to OEM partners. The focus is on enhancing an already functional platform with quality components.

This video delves into the critical aspects of firearm barrel selection, covering material science, manufacturing processes, and finishing techniques. It contrasts different steel grades like 4140 and 4150, explaining their properties and military applications. The discussion extends to advanced materials such as stainless steel variants and carbon fiber-wrapped barrels, highlighting their respective advantages in corrosion resistance, hardness, and weight reduction. Furthermore, it details various rifling methods, including button, cut, and cold hammer forging, and explores barrel finishes like Parkerizing and Melonite, emphasizing their impact on durability and maintenance.

This video introduces the new Bullet Proof® Adjustable Lo-Profile AR-15 Gas System from Wilson Combat, presented by Paul Levy of Brownells. The system features a low-profile gas block made of 4140 steel with an integrated stainless steel gas tube. Its key feature is a slot-head screw allowing adjustment of gas flow through 16 positive-click settings, enabling users to optimize for different ammunition. The self-cleaning mechanism scrapes out carbon fouling with each adjustment. Setscrews secure the block to pre-dimpled barrels, and the straight gas tube simplifies installation. The system is available with various gas tube lengths and for different barrel diameters.

Brandon Herrera provides an April 2020 update on the AK-50 project, detailing a significant design shift from a milled to a stamped receiver for AKM aesthetics and production efficiency. Key updates include a 4140 steel front trunnion prototype and a 3D-printed receiver mock-up. The ejector mechanism is reverting to a traditional AK 'shark fin' style for improved reliability and authenticity.

This video compares Chinese and Ukrainian rifling buttons for home shop use. Mark Serbu tests both buttons on 12L14 steel blanks, noting the Chinese button is tungsten carbide with TiN coating and produced 4 grooves, while the Ukrainian button is a combination type and produced 6 grooves. Both buttons performed successfully for DIY applications, though further testing with better barrel materials is planned.

This video details a DIY attempt at home rifling using an inexpensive 'combo' button from Ukraine. Despite initial promise, the button exhibited manufacturing defects, and the process failed due to tool buckling and breakage. The experiment highlights the critical need for high-quality tooling and robust support systems in rifling, warning against the dangers and frustrations of under-equipped DIY attempts.

This guide details the field stripping and reassembly process for the Century Arms VSKA, an American-made AK variant chambered in 7.62x39mm. It highlights the use of robust materials like S7 tool steel for critical components and a durable Parkerized finish. The process involves removing the top cover, recoil system, and bolt carrier assembly, followed by a straightforward reassembly.

Nutnfancy's review positions the Century Arms C39 V2 as a 'gold standard' for American-made AKs, highlighting its milled 4140 steel receiver, RAK-1 trigger, and impressive 100-yard accuracy near 1 MOA. While acknowledging past Century Arms issues, the C39 V2 is praised for its durability and value, though the pistol variant exhibited significant sight regulation problems.