What trigger I use in my BRN4

This guide, presented by School of the American Rifle, details how to identify and replace a malformed weld spring in an AR-15 Delta Ring assembly. A misaligned weld spring can cause the gas tube to be pushed off-center, leading to excessive friction or damage to the carrier key and gas tube. Replacing the faulty component ensures proper gas tube alignment and firearm reliability.

This video, titled "The Buffer Part 2 - Buffers use in Commercial Rifles," is the second installment of a series focusing on rifle components. It appears to delve into the function and application of buffers within commercial rifle platforms. The description provides links to purchase firearms-related books, tactical earmuffs, gun rests, and other accessories, suggesting an emphasis on practical firearm knowledge and equipment. The video also includes affiliate links for various brands like AXIL, Challenge Targets, Otis Tech, G96, and Manta Products, as well as donation links for Small Arms Solutions (SAS).

This YouTube Shorts video likely showcases the creation or modification of an AR-platform firearm magazine, potentially referred to as the "ARQUAD MAG." The title suggests a focus on a specific type of magazine, and the inclusion of hashtags like #shorts indicates a short-form, engaging format. The description points to a "gear" link, implying the video might be part of a broader content strategy related to firearms and everyday carry (EDC) items.

This YouTube video focuses on a common and crucial aspect of firearm ownership: the buffer system. The title, "What buffer system do you use?", directly asks for viewer input on their preferred buffer systems. While the description is empty, the title alone indicates a discussion or inquiry into different buffer systems, which are vital components for the reliable operation of firearms, particularly semi-automatic rifles like the AR-15 platform. Viewers interested in firearm maintenance, customization, or performance optimization would find this content relevant.

This video focuses on AR-15 lower parts kits, guiding viewers on how to select the right one for their build. It highlights the importance of understanding the differences between kits to ensure a successful firearm assembly. The description also encourages viewers to sign up for CMMG Insider updates and provides links to CMMG's website and social media channels for more information on releases and company news.

This YouTube video, titled 'Do you still run an old charging handle?', appears to be a discussion or review focused on firearm components, specifically charging handles. Given the title, it likely explores the utility, performance, or perhaps upgrades related to charging handles, potentially comparing older designs with newer ones. The content could delve into functionality, ergonomics, or compatibility with various firearm platforms.

This video showcases advanced rapid fire and reload techniques on an M4 Carbine. The shooter demonstrates exceptional recoil management and weapon manipulation skills, performing a tactical reload under pressure. The focus is on efficient execution in a high-stress scenario, highlighting the importance of practice for self-defense.

This review of the Springfield M1A Scout Squad after 7,000 rounds highlights its reliability, particularly with Wolf steel-cased ammo. Key insights include the effectiveness of its iron sights, potential glove interference malfunctions with the operating rod, and cosmetic wear being a sign of heavy use. The speaker, with extensive practical experience, advises using grease for lubrication on this gas-operated rifle.

This video challenges the necessity of specialized gun lubes, arguing that readily available automotive lubricants like 10W-30/40 motor oil and high-temp lithium grease offer superior value and performance. The speaker, drawing on practical experience, suggests these alternatives are more robust for demanding conditions and cost-effective for high-volume shooters. Specific recommendations are made for different firearm platforms, particularly noting grease's potential issues in extreme cold for AR-15s.

This guide details the construction of a custom AR pistol focused on serious use and reliability, as explained by an experienced firearms instructor. Key components include a 12.5-inch BCM barrel with a carbine-length gas system, Daniel Defense upper and BCG, and a DPMS lower. The build emphasizes proven parts over novel gadgets, achieving impressive accuracy and demonstrating high reliability over thousands of rounds.