Firearms Facts Episode 21: 5.45x39mm

This guide details a comparison between the AK-74 and AK-47, focusing on their respective calibers, 5.45x39mm and 7.62x39mm. Expert analysis from Kentucky Ballistics includes recoil assessment, detailed ballistic gel testing demonstrating bullet tumbling and wound channel creation, and energy transfer evaluations. The AK-74's 5.45x39mm round is highlighted for its impressive terminal ballistics.

This guide, presented by former CIA Officer Jason Hanson, compares the AR-15 and AK-47 for high-tension scenarios. It details the pros and cons of each rifle, including ergonomics, durability, maintenance requirements, and performance in various tests like vehicle penetration. Hanson offers his expert opinion on which rifle is preferable for 'armageddon' situations, emphasizing the importance of maintenance and repair kits for the AR-15 and the rugged reliability of the AK-47.

This video demonstrates a ballistic test to determine if forklift forks can stop various firearm rounds, from .22 LR up to .50 BMG. The test, conducted by an experienced individual, shows that while forklift forks can stop many common handgun and rifle rounds, they are penetrated by the .50 BMG round. The results provide practical insights into the ballistic resistance of steel under extreme impact.

Instruction from Ted of Line 45 provides expert insights into building an ammunition stockpile before potential shortages. The guide details which calibers are most vulnerable, like .22 LR and 9mm, and explains the impact of supply chains and import restrictions. It emphasizes strategic stockpiling for different uses, from training to self-defense, to ensure preparedness.

This guide, presented by retired SGM Karl Erickson of Tactical Rifleman, details essential techniques for shooting effectively in cold weather. It emphasizes proper gear selection, including belt systems and glove layering, to maintain dexterity and weapon control. The importance of consistent training in adverse conditions is also highlighted.

This video demonstrates the distinct sounds of supersonic rifle fire from 400 yards, differentiating between the sonic crack of projectiles passing and their impact. It uses an AR-15 and AK-47 to illustrate how sound travels and the audible effects at varying distances off target, providing a practical understanding of long-range ballistics. The content is presented by CajunBoyJake, a firearms enthusiast.

This video provides an expert-level overview of a heavily customized AR-15, nicknamed the 'Zombie Destroyer', built for a thematic zombie apocalypse scenario. The build features an extensive accessory loadout including multiple optics, lasers, and flashlights, along with a high magazine capacity. The demonstration includes rapid fire, engagement of Tannerite targets, and unique shooting techniques, showcasing the rifle's capabilities and the instructor's proficiency.

This video details an extreme AR-15 meltdown test, pushing a custom build to its limits. Expert instructor Eric demonstrates the process, highlighting component durability and failure points under sustained fire. The test concludes with a catastrophic barrel failure after 830 rounds, providing valuable insights into the platform's resilience.

This guide details the process of conducting an extreme durability test on an AK-47 variant, specifically the Definitive Arms VEPR, as demonstrated by Iraqveteran8888. The test involves sustained full-auto fire to induce critical heat failure, followed by inspection of components like the barrel and gas block. The expert assessment highlights the rifle's resilience, lasting 895 rounds before failure, and compares its performance to other platforms.

This guide details a 700-round rapid-fire stress test on a Yugo M92 PAP AK-47 variant, demonstrating the platform's legendary durability under extreme heat. Performed by Eric from Iraqveteran8888, the test highlights safe handling of overheated firearms and concludes with a tribute to Mikhail Kalashnikov's engineering legacy. The firearm successfully completed the test despite significant heat buildup.