Lathe Machine Gun

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.

Mark Serbu details the design and construction of his Q2 Pistol, a single-day prototype built in 2011. The pistol utilizes a BFG-50 trigger group and features a unique removable falling block action. Serbu discusses material choices like 4142 pre-hard steel for the breech block and 1018 steel for the frame, along with aesthetic design elements and legal compliance through a rifled barrel liner.

This guide details the process of stamping sheet metal, specifically 4130 annealed steel, for firearm components, as demonstrated by Mark Serbu. It covers preparation, lubrication, the stamping process using a hydraulic press, and troubleshooting common issues like misalignment and material shifting. The content highlights the precision required and the challenges in designing simple dies for complex bends, emphasizing learning from failures in engineering.

This video details the process of stamping steel upper receivers for the Diabolos rifle, transitioning from machined aluminum for improved durability and manufacturing speed. It covers press setup, specialized lubrication, die construction using repurposed gun barrels and ASTM A36 steel, precision machining for alignment, and TIG welding techniques. The demonstration highlights the efficiency of stamping steel over traditional machining for this application.

This video features gun designer Mark Serbu discussing the GB-22 pistol. The content focuses on the design of the GB-22 and a detailed page-by-page walkthrough of its drawings, aimed at individuals planning to build one. It's an in-depth look for those interested in the technical aspects of firearm design and construction.

This YouTube video features gun designer Mark Serbu demonstrating the process of removing the barrel from his custom firearm, the SU-15. The video offers a brief look into the technical aspects of firearm design and maintenance, specifically focusing on a component of a unique rifle.

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 in-depth analysis of the Serbu RN-50 rifle that experienced a catastrophic failure during a Kentucky Ballistics test. Mark Serbu, the designer, meticulously examines the damage, noting severely bent steel side plates, sheared-off breech cap ears, and a sheared pivot pin. The inspection also covers the breech cap's condition, barrel threads, and the stuck casing, revealing a case head separation.

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.

Mark Serbu details his unique .22 LR NFA AOW 'Butt-Master' pen gun, designed over 20 years ago. He explains its simple striker-fired mechanism, the cocking cutout, and the breech loading process. Serbu highlights the firearm's specific ban by name in Canada, despite only one existing and remaining in his possession. The video also showcases a custom suppressor and concludes with a demonstration of the Olight PL-3 Valkyrie weapon light.