Kentucky Ballistics Breaks Another RN-50!

This video details the process of repairing a chopped receiver section from a Star Z70 parts kit. Mark Serbu, a gun designer, demonstrates how to fabricate and weld in replacement metal to restore the structural integrity and form of the receiver. He emphasizes using an expanding mandrel for alignment and copper flashing to protect against welding spatter, while also discussing techniques to minimize heat distortion and achieve a functional repair using 'caveman tools' and optional CNC machining.

This video showcases the final preparations for shipping the very first BFG50A Mark I rifle. It details the unique process of tuning handguard wires to a specific tension (1,000 lbs of force) using principles of physics, followed by a test fire of the .50 caliber rifle and subsequent cleaning. The content highlights the meticulous nature of custom firearm building.

This video details the process of disassembling a Beretta 418 pistol to replace its weakened recoil and striker springs. The presenter, Mark Serbu, highlights the unique barrel retention mechanism and the common issue of over-compressed springs in older firearms. He demonstrates the spring replacement and reassembly, emphasizing the importance of correct spring alignment to prevent further damage.

Mark Serbu, a gun designer, details the complex machining process for the BFG-50A trunnion, a critical component housing the serial number and barrel extension. He discusses challenges with tapping hardened alloy steel, including tap breakage, and the successful implementation of using a larger drill size with molybdenum disulfide grease. The video also covers thread milling techniques for various holes, including the gas cylinder boss, and highlights the importance of precise tolerances for accuracy.

This video demonstrates the advanced machining process for the BFG-50A rifle receiver, specifically focusing on creating the scope base holes. Gun designer Mark Serbu details the use of CNC machinery, touch probing, and specialized tooling like carbide center drills and 5/16 inch endmills to achieve precise tolerances on the complex weldment receiver. The process highlights the importance of accurate fixturing and the capabilities of modern machining for firearm manufacturing.

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 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.