Semi Auto Revolver?

This video details a failed attempt at stamping a firearm component using a 120-ton hydraulic press. Mark Serbu, owner of Serbu Firearms, highlights the critical importance of precise material alignment and die design in sheet metal stamping. The demonstration showcases common pitfalls, such as misalignment leading to skewed parts, and the challenges of achieving complex bends with simple dies. Serbu emphasizes that learning from failures is integral to the engineering process.

This video offers a detailed look at the rare Webley-Fosbery .455 Auto Revolver, covering its conservation and function. The presenter demonstrates a tear-down and firing of this unique recoil-operated, semi-automatic revolver, comparing its complexity to the Mateba 6 Unica. While praising its shooting characteristics, the presenter notes its rarity as a deterrent to duty carry. A strong disclaimer emphasizes that this content is for learning and not a tutorial, warning against attempting repairs without proper skills. The video also promotes the creator's Patreon page.

This guide details the process of stamping steel upper receivers for the Diabolos rifle, as demonstrated by Mark Serbu of Serbu Firearms. It covers the use of a 200-ton hydraulic press, specialized lubricants like Super Draw 150, precision machining of dies, and TIG welding for assembly. The method highlights the efficiency of stamping over traditional machining for receiver production.

This video showcases an experimental custom-built 7-barrel 12-gauge shotgun designed for simultaneous volley fire. Expert insights are provided by Edwin Sarkissian, a niche influencer known for experimental builds, who collaborated with professional firearm designer Mark Serbu. The demonstration highlights the firearm's construction, remote firing technique for safety, and its destructive potential on ballistic targets, emphasizing advanced DIY firearm concepts.

This analysis from Mark Serbu, owner and lead designer of Serbu Firearms, details the catastrophic failure of the RN-50. The primary cause identified is the use of fast-burning pistol powder instead of the appropriate slow-burning .50 BMG rifle powder. Serbu uses ballistics software to illustrate how incorrect powder choice leads to extreme pressure spikes far exceeding safe limits, emphasizing the difference between failsafe design and absolute fail-proof protection against misuse.

This video provides an expert look inside a .50 BMG barrel, specifically a cutaway demonstration piece sent to Edwin Sarkissian by gun designer Mark Serbu. It highlights the internal rifling and chamber engagement of a .50 BMG round, offering insights into the mechanics of this powerful cartridge. The barrel also features a personalized engraving from Mark Serbu to Edwin Sarkissian.

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, designer of the RN-50, addresses a catastrophic failure experienced by Kentucky Ballistics. He reassures customers about the RN-50's safety, attributing the incident to counterfeit or over-pressured ammunition. Serbu highlights the rarity of such events and emphasizes industry transparency, noting that his company has produced approximately 1,400 RN-50s since 2016 with hundreds of thousands of rounds fired without issue.