The GB-357

This guide details the process of tuning an AR-9 style platform, specifically a Daniel Defense PCC, to reliably function with the ARC Fire trigger system. It covers essential modifications like dremeling the bolt carrier, selecting appropriate buffer and spring combinations, and testing with subsonic ammunition. The expert-level insights highlight the trial-and-error involved in achieving optimal performance on a blowback system.

This video provides an expert-level look at the unique E.H. Searle Prototype, a 1-of-1 firearm chambered in .32 ACP. The demonstration highlights its innovative squeeze-grip slide cocking mechanism and integrated magazine release. It also details a straightforward takedown procedure involving a forward lever to free the barrel. The presentation is highly informative, showcasing deep knowledge of historical firearm prototypes.

This guide details the disassembly of the Romanian Orita Model 1941/48 submachine gun, focusing on the process of removing the bolt and recoil spring assembly. It emphasizes the importance of safety checks throughout the procedure. The Orita, designed by Marin Orita, is a blowback-operated SMG known for its robust construction despite its wartime origins.

This YouTube Shorts video, titled "Cosa l'ha causato? Sfondellamento a pistola chiusa #shorts" (What caused it? Closed pistol blowback #shorts), appears to be a brief, likely visual demonstration or explanation of a firearm-related phenomenon. The term "sfondellamento a pistola chiusa" directly translates to "closed pistol blowback" or "blowback in a closed breech." This suggests the content might be about the internal mechanics of a firearm, potentially explaining malfunctions, cycling, or design principles related to how a pistol operates when the breech is locked. Given the brevity implied by #shorts, it's likely a quick educational snippet or a demonstration of a specific event.

This guide details the disassembly of the Viper MkI, a unique steampunk Sten modification. It covers removing the wooden housing to expose the internal Sten-based action, highlighting the handmade nature and specific modifications. The video features Ian McCollum from Forgotten Weapons, providing expert insights into this rare firearm.

This guide details the disassembly of the Colt Model 1903 Pocket Hammerless, a John Browning design. It covers the steps for field stripping the pistol and provides insights into its internal blowback mechanism and internal hammer. The video highlights the evolution of the design through its Type I, II, and III variations.

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.