This YouTube video focuses on firearms technology, specifically exploring the concepts of delayed blowback operation and the use of suppressors. While the description is brief, the title clearly indicates a technical discussion and demonstration of these firearm mechanisms. It's likely to appeal to enthusiasts interested in the engineering and practical application of suppressed firearms.
This video segment from "American Rifleman Television" focuses on the M1 and M1A1 Thompson submachine guns, highlighting their development as a cost-effective wartime expedient compared to the earlier, more expensive M1928A1 model. It details design simplifications, such as the elimination of the Blish locking system for a blowback operation, removal of barrel cooling fins, Cutts compensator, and complex sights, along with the switch to stick magazines. The evolution leading to the M1A1, featuring a further simplified fire-control mechanism, is also discussed. The video emphasizes the widespread use of the M1 Thompson by various branches of the U.S. military and its allies during World War II, particularly in the Pacific theater.
This video discusses the "Gas Operated Semi Automatic Firearm Exclusion Act," a proposed bill that aims to ban certain types of semi-automatic firearms based on their operating mechanisms. The description highlights that the bill is unlikely to pass but notes its broad nature, impacting various gas-operated systems including long stroke piston, short stroke piston, direct impingement, hybrid systems, blowback, and even recoil-operated firearms as defined within the bill. Links to the full story at The Reload and the official bill text are provided for further information.
This "Gun Of The Week" video from American Rifleman focuses on the Rock Island Armory TM22, a .22 Long Rifle semi-automatic rifle manufactured by Derya Arms of Turkey. The review highlights its AR-like aesthetics and components, such as the split receiver, pistol grip, and fore-end with M-Lok slots. It discusses the blowback-operated action, the 18" barrel threaded for muzzle devices, and the 10-round detachable magazine. The video notes the TM22's preference for high-velocity ammunition and praises its intuitive controls, light 2-lb. trigger, and quick reset, making it enjoyable for range practice.
This video offers a detailed exploration of gas-delayed blowback pistol systems, showcasing examples from various countries including South Africa, China, and Europe. While acknowledging a predominant design, the video also highlights variations and distinct approaches to this particular firearm mechanism. It appeals to enthusiasts interested in the historical and technical aspects of firearms engineering.
This video provides a detailed product spotlight on the Brownells BRN-9 upper receiver, aimed at AR-15 pistol and pistol-caliber AR enthusiasts. It highlights the 9mm Luger chambering, compatibility with various AR-15 and BRN-180 lower receivers (including magwell adapters for Glock, Colt SMG, CZ Scorpion, MP5, and SIG P320 magazines), and its blowback-operated system that eliminates the need for a buffer tube. The review emphasizes the non-reciprocating, ambidextrous charging handle, the 5.5" Nitride-coated barrel with 1/2"-28 tpi threads, and the billet aluminum construction. It also addresses the important safety caution regarding muzzle device compatibility with different calibers.
This video debunks the myth that lubricating ammunition is beneficial. The host explains that oil on ammunition can lead to dangerous pressure spikes within the firearm due to altered case expansion against the chamber walls. This excess pressure can cause head thrust, damaging bolt lugs, flattening primers, and potentially causing the firearm to over-cycle. The video emphasizes that any feeding or extraction issues should be addressed by fixing the firearm itself, not by altering the ammunition. It advises against lubricating ammunition for any firearm, including for handloaders who should remove case sizing lube.
This "Gun of the Week" video from American Rifleman showcases the Wilkinson Arms Linda 9mm Carbine. The review details its design, inspired by 1960s-80s aesthetics, featuring a blowback-operated, semi-automatic action. Key components highlighted include a 6061 T6 aluminum receiver, a 16.5-inch barrel with 1/2x28" muzzle threads, a reciprocating handle, a simple vertical grip, a crossbolt safety, a wood fore-end, and a folding stock with a Picatinny mount. The carbine accepts 31-round stick magazines and has provision for optics. The video offers an on-range look at the firearm.
This segment from American Rifleman TV features a historical examination of the L2A3 Sterling submachine gun. The video delves into the SMG's development as a successor to the Sten gun, highlighting its redesign by Sterling Armament Co. based on George William Patchett's earlier work. Key features discussed include its 9x19mm caliber, blowback operation with advanced primer ignition, a manageable rate of fire leading to accuracy, and its characteristic under-folding collapsible stock, making it easily transportable. The Sterling SMG served the British military for over 40 years.
This video from Brownells focuses on the crucial topic of buffer weights for Pistol Caliber Carbines (PCCs) built on the AR-15 platform. Expert Caleb explains why PCC buffers are heavier than standard rifle caliber buffers due to the blowback operating system. He details typical buffer weights for 9mm, .40 S&W, .45 ACP, and 10mm Auto, emphasizing the need for even heavier buffers when using suppressors. The video also touches upon the variation in PCC buffer lengths.
This video delves into the mechanical differences between blowback and short recoil operated semi-automatic pistols. The presenter aims to explain why certain pistols exhibit barrel tilt and how different operating systems can lead to varied perceived recoil, even between different calibers and pistol sizes. The explanation is intended to be accessible without overly technical jargon, addressing common user questions about firearm mechanics.
This video provides a practical guide on converting a 5.56/.223 AR-15 rifle into a 9mm Pistol Caliber Carbine (PCC). Brownells Gun Tech Steve Ostrem details the necessary modifications, including replacing the barrel with an "AR-9" specific barrel designed for blowback operation (no gas port or locking lugs). He also explains the need for a heavier bolt/carrier assembly and buffer, while noting compatibility with a standard carbine spring. The video highlights the requirement for a new muzzle device with a larger exit hole and importantly, a magazine well conversion unit from brands like American Tactical, Hahn Precision, or Stern Defense, to accommodate various pistol magazines (Colt SMG, Glock, etc.). The process concludes with assembly, a headspace check, and a range test.
