Springs!

This video demonstrates a critical step in making a firearm spring, specifically shaping the end to form a peg. Master Gunsmith Jack Rowe details the process of tapering the sides of the spring material after it has cooled, emphasizing the importance of achieving the correct taper to ensure the spring's functionality without making the firearm too difficult to operate. He also touches on the efficiency of filing versus setting up a mill for this particular task, suggesting that for custom spring work where labor costs are a factor, speed is essential.

This video provides a deep dive into the new aluminum extrusion handguard for the BFG 50A rifle, contrasting it with the original steel version. Mark Serbu explains the design evolution, focusing on the M-LOK attachment points, the innovative spoke tensioning system that uses bicycle spoke components and custom-made spokes, and the manufacturing process of the aluminum extrusion. The guide highlights the advantages of the new design in terms of manufacturing efficiency and modularity.

This video details the upgrade to a new aluminum extrusion handguard for the BFG-50A, replacing the previous steel weldment. The new handguard features M-LOK cutouts and a novel tensioning system utilizing high-tensile strength music wire, inspired by bicycle spoke principles. The speaker emphasizes the improved precision of the machined trunnion and the robust mounting method for accessories like bipods.

This video demonstrates the process of making and hardening a small spring, likely for firearm repair or fabrication. It covers crucial steps like shaping, heat treatment to achieve a uniform red color, oil quenching, and testing the spring's temper and set. The instructor emphasizes the importance of not overheating the spring and the benefits of making it slightly too soft for re-hardening, rather than too hard which risks breakage.

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.