AR-15 - Bolt Catch Installation

This video from AT3 Tactical explores the function and necessity of the forward assist on AR-15 style firearms. It delves into the component's historical origins, specifically its introduction during the Vietnam War era, and examines its practical applications and potential drawbacks on modern rifles. The content aims to educate viewers, whether they are new to building or modifying AR-15s, to make an informed decision about the forward assist's role in their firearm setup. The video also touches on specific drills and potential problems associated with the component.

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 guide details the installation of an aftermarket AR-15 trigger, specifically a Timney Triggers product. The process involves unboxing the trigger, identifying its modular components like interchangeable shoes, and then carefully installing it into a lower receiver. A function test is crucial to confirm correct operation. The speaker demonstrates proficiency with firearm components and installation procedures.

This guide details the process of diagnosing and fixing a significant rail wobble issue on a new Daniel Defense Mk18 upper receiver. The primary cause identified was a hand-tight barrel nut, compromising the stability of the RIS II rail system. The steps involve disassembly, inspection of the barrel nut, proper tightening with an armorer's wrench and torque wrench, and reassembly. This addresses a critical quality control failure that can affect firearm accuracy and reliability.

This guide details the evolution of AR-15 carrier key staking from early 'Gen 1' square staking to modern 'Gen 5' OCKS with serrated heads. It emphasizes proper torque values (vintage 35-40 in-lbs, modern 55-58 in-lbs) and the importance of sufficient metal displacement for screw security. The video, presented by an expert from School of the American Rifle, critiques commercial staking and references historical technical manuals.

This video from CMMG provides a detailed, step-by-step guide on how to install the forward assist adapter, anti-bounce weight, and sear trip kit for their .22 Conversions. It aims to answer common customer inquiries and demonstrates the process clearly. The description also encourages viewers to sign up for CMMG Insider for future updates and directs them to the CMMG website and social media channels (Instagram and Twitter).

This video provides a detailed guide on loading a 75-round drum magazine for the AK-47, specifically a Romanian variant. It covers identifying components like the follower and spring tension release, resetting the follower, and the correct procedure for inserting rounds. The tutorial also emphasizes the importance of winding the spring correctly and releasing tension for long-term storage to preserve spring health.

This beginner's guide to the AR-15 covers essential external components, controls, and the basic cycle of operation. It emphasizes proper magazine seating with a firm 'whack' and demonstrates field stripping for cleaning. The video highlights key aftermarket parts from brands like Magpul and Battle Arms Development, offering practical advice for new AR-15 owners.

This video demonstrates the proper installation of an A2 style flash hider on an AR-15 barrel, emphasizing critical steps for optimal performance. Key takeaways include using a crush washer with the correct orientation, applying grease to threads, and precisely indexing the device to prevent dust kick-up when shooting prone. The speaker highlights the importance of aligning the solid portion downwards and using a pin to verify alignment with the gas port for a secure and functional installation.

This video details the critical process of checking headspace on an AR-15 build, emphasizing safety and proper function. It covers the complete disassembly of the bolt carrier group, the precise use of 'Go' and 'No-Go' gauges to verify chamber dimensions, and the reassembly of the BCG. The demonstration highlights the importance of ensuring the bolt does not close on a 'No-Go' gauge to prevent dangerous headspace issues.