BFG 50A Bolt Carrier PSA

This guide details the installation of the Krebs Custom Left-Side Charging Handle Kit for AKM-pattern rifles. The modification is presented as a tool-less, non-permanent, and reversible upgrade, taking approximately 20 seconds. It enhances ergonomics for competitive shooting by allowing faster reloads and malfunction clearing without breaking the firing grip. The kit utilizes a modified WBP Polish bolt carrier designed for thick-stem AKM bolts.

This video provides an in-depth look at the completion of the AK-50 V3 components, showcasing the advanced machining processes at Titans of CNC. Lead designer Brandon Herrera details the intricate geometry of the bolt, the two-piece bolt carrier's cam groove function, and the critical role of the threaded front trunnion for headspacing. The update highlights the precision engineering required for this .50 BMG rifle project.

This guide details the installation of the Arizona Regulator AZR-15, a drop-in Forced Reset System (FRT) for AR-15 platforms. The video features PSR, a recognized authority in the DIY firearm community, demonstrating the installation and function of the AZR-15 on various upper receivers, including a Midwest Industries MI-15F Combat Rifle HD. The guide emphasizes the importance of proper firearm handling and understanding the technical mechanics of the FRT system.

Mark Serbu discusses the potential revival of his SU-5 firearm design, originally conceived over a decade ago. He details modifications made to the CAD model, specifically shortening the ejection port by 3/8 of an inch to prevent the bolt carrier from jumping the gap, a modification aimed at improving reliability. The video also showcases high-speed footage of the SU-5's operation, including gas expulsion during suppressed firing.

This video provides an in-depth look at an MG 42 parts kit, focusing on its design and manufacturing techniques from a gun designer's perspective. The presenter highlights the innovative use of stamped sheet metal, the complexity of the feed mechanism, and the overall engineering achievement of the MG 42, particularly its early adoption of advanced manufacturing processes for its time. The discussion also touches upon the MG 42/59 variant and its caliber conversion.

This YouTube video, titled "A sign your plate is done for...", suggests a practical tip for extending the lifespan of a firearm component, likely a bolt or bolt carrier. The description urges viewers to 'flip your plate' to avoid a negative outcome. While no specific firearm models, calibers, or manufacturers are mentioned, the core topic revolves around firearm maintenance and care, implying a focus on longevity and preventing wear or damage to a critical part.

This guide details the complex process of converting a lathe into a 12-barrel blank-firing gun, as demonstrated by Mark Serbu. It highlights the critical engineering challenges, including precise alignment, CNC control, and the application of PID theory to overcome firing inconsistencies. The project emphasizes safety and legal considerations, focusing on blank ammunition to avoid machine gun manufacturing regulations.

This video demonstrates how to rifle a barrel in a home shop using basic tools, bypassing expensive CNC equipment. It covers material preparation, precise drilling and reaming, and the critical process of pushing a rifling button. While a DIY approach is shown to be possible, the video highlights the significant difference in quality and precision achievable with professional CNC machining.

This video provides an expert-level analysis of a catastrophic failure of the Serbu RN-50 rifle, presented by the firearm's designer, Mark Serbu. The examination focuses on the severe damage to the receiver, breech cap, and barrel assembly, offering insights into potential failure points and the effects of extreme forces. The analysis also touches upon the ammunition used, specifically SLAP rounds, and their potential role in the incident.

Mark Serbu, a gun designer, addresses the RN-50 blow-up incident involving Scott from Kentucky Ballistics. Serbu reassures customers that the RN-50 is a safe design, attributing the incident to a counterfeit and faulty ammunition round. He emphasizes the importance of sourcing ammunition carefully and highlights the rifle's extensive safe operational history.