Videos tagged with 8620 Steel

This video provides an in-depth look at the Sons of Liberty Gunworks (SOLGW) Bolt Carrier Group (BCG). The presenter highlights SOLGW's commitment to quality control and their use of premium materials, including Carpenter 158 steel for the bolt and 8620 steel for the carrier. The BCG is noted for being shot peened, high-pressure tested, and magnetic particle inspected, with certificates provided. The phosphate version features a chrome-lined interior, adhering to mil-spec standards. The aggressive staking on the carrier is also praised for its durability. The video also touches on SOLGW's manufacturing philosophy, emphasizing individual responsibility and meticulous part selection for each build.

This video from AT3 Tactical provides an expert-level breakdown of Bolt Carrier Groups (BCGs) for AR-15 platforms. Instructor C.J. details the critical role of BCGs, explaining how material composition (Carpenter 158, 9310, 8620 steel), advanced coatings (Phosphate, Nitride, Nickel Boron, DLC), and special features like full-auto profiles and properly staked gas keys influence performance and price. The content is highly technical, utilizing metrics like tensile strength (MPA) and coefficient of friction (COF) to guide consumers toward informed purchasing decisions.

This review compares the Aero Precision Black Nitride BCG against the Anderson Phosphate BCG, focusing on their impact on rifle accuracy. While the Aero Precision BCG exhibits a smoother, shinier finish, the testing revealed no significant difference in average group size at 100 yards when using standard ammunition. Both BCGs performed to a similar accuracy benchmark, suggesting that for standard AR-15 platforms, the finish of the BCG has minimal impact on inherent accuracy.

This video provides an in-depth look at the manufacturing process of AR-15 components, including BCGs, barrels, and lower receivers, at DRG Manufacturing. It details the use of specific materials like Carpenter 158 and 4150 CMV steel, highlights advanced CNC machining and automation, and explains critical processes like heat treatment and precision grinding. The content is presented with high technical authority, offering detailed insights into achieving mil-spec tolerances and material properties essential for reliable firearm function.

This guide, presented by the Tactical Toolbox host, details how to select the best Bolt Carrier Group (BCG) for an AR-15. It covers essential considerations like steel types (8620, Carpenter 158, 9310, S7), coatings (Phosphate, NiB, DLC), quality control (HP/MPI), and critical maintenance like gas key staking. The host emphasizes understanding M16 vs. AR-15 profiles and highlights advanced features in premium models, offering practical advice for builders and owners.

This comprehensive guide, presented by Chris Bartocci, a recognized expert on the AR-15 platform, details various enhanced Bolt Carrier Groups (BCGs) for AR-15, M16, and M4 platforms. It covers baseline Mil-Spec designs, advanced features like dual extractors and integral gas keys, material science (Carpenter 158, 9310, 8620 steel), and specialized applications including lightweight and adjustable gas systems. The information is crucial for understanding reliability, durability, and performance improvements beyond standard military specifications.

This video introduces Brownells' new titanium bolt carrier groups (BCGs) for AR-15/M16 platforms and a lightweight 308 BCG. The titanium BCGs are significantly lighter than standard or cutaway versions, featuring a matte DLC coating for slickness and durability. The presenter highlights their use in tuning competition guns for reduced recoil and also showcases a standard 8620 steel M16 carrier with a tin coating for easier cleaning and a distinct look.

This review covers the Umbrella Corporation AR-15 Bolt Carrier Group (BCG), highlighting its generally milspec construction with a focus on published specifications. The BCG features a bolt made from Carpenter 158 steel, heat-treated, shot peened, HPT, and MPI tested individually. The carrier is constructed from 8620 steel with chrome lining, and the gas key is machined from 4130 Chrome Moly steel with robust staking. The reviewer notes zero malfunctions in various firearms and praises the company's transparency in publishing detailed specs.

This review covers the Manticore Arms Eclipse flash hider for AK-47 and Yugo PAP platforms. The reviewer highlights its effectiveness in flash suppression, durable 8620 steel construction with black oxide finish, and 922r compliance. It's noted to be US-made and available in multiple thread pitches (14mm, 24mm, 26mm) to accommodate various AK variants, including Yugo PAP rifles. A minor 'ping' sound is mentioned as a common characteristic of prong-type brakes, particularly noticeable indoors, but deemed insignificant by the reviewer.

This review covers the TR Enabling AR-15 Bolt Carrier Group (BCG) featuring their 'Obsidian' coating. The Obsidian coating is a nickel-based, Teflon-impregnated finish with a low coefficient of friction (0.06) and high Rockwell hardness (70). It offers advantages like reduced staining and a matte finish, making it ideal for those concerned with signature reduction. The BCG is constructed from 8620 steel for the carrier and Carpenter 158 steel for the bolt, both meeting military specifications. The gas key is one-piece billet steel with good staking, and the bolt is MPI and shot peened. The extractor is billet with a full-auto spring buffer and O-ring for positive ejection. The reviewer recommends lubrication and notes the coating's benefits for suppressed shooting.

This video reviews the Wheaton Arms M16 Bolt Carrier Group (BCG), emphasizing its importance as a critical component for AR-15 and M16 platforms. The reviewer highlights that BCGs and barrels are the most vital parts, justifying investment in quality. The Wheaton Arms BCGs are presented as high-quality, US-made options available in phosphate ($119.99) and nickel boron ($160) finishes, suitable for 5.56, .223, and .300 Blackout calibers. Key features include Carpenter 158 steel bolts, 8620 steel carriers, chrome-lined interiors, hardened gas keys, and HPT/MPI testing.

This review of the AIM Surplus Black Nitride AR-15 Bolt Carrier Group highlights its durability, ease of cleaning, and performance. The reviewer, with extensive experience, details the nitriding process, material specifications (9310 steel bolt, 8620 steel carrier, 4140 steel gas key), and compares it to other finishes like phosphate and nickel boron. It's presented as a cost-effective upgrade for AR-15 owners seeking enhanced wear resistance and corrosion protection.