Quick Tip: 5.45x39mm & 5.56x45mm NATO - What's the Diff?

This video provides an expert-level analysis of 7N6 5.45x39mm ammunition, often referred to as the 'poison bullet,' through a ballistic gelatin test. The demonstration highlights the extreme effectiveness of the 7N6 round, showcasing its significant energy transfer, rapid tumbling, and the resulting 'insane' wound cavity compared to standard 5.45x39mm ammunition. The instructor emphasizes the unique ballistics that contribute to its controversial reputation.

This demonstration by Civilian Tactical showcases the significant terminal ballistic differences between standard 5.45x39mm ammunition and the 7N6 'poison bullet'. Through ballistic gelatin testing, the video illustrates how the 7N6 round's design causes immediate tumbling and yaw, leading to a dramatic energy dump and a much larger wound cavity compared to the standard round. The instructor's expertise is evident in the controlled testing and clear explanation of the observed phenomena.

This video provides a direct comparison of .300 Blackout and 5.56 NATO energy output out to 75 yards, using two 16-inch barrel AR-15 platforms and specific handloads. The analysis, conducted by The Gun Dungeon Host, utilizes a LabRadar to measure velocity and calculate energy, concluding that .300 Blackout offers significantly more energy at these distances, making it a strong contender for deer hunting where a minimum of 1000 ft-lbs is often recommended.

This video showcases a custom AR-15 build with striking red anodized accents on components like the buffer tube, safety selector, and charging handle. The build features a micro red dot sight and a Magpul PMAG magazine. The presenter humorously compares the expense of custom firearms to past habits, highlighting the financial commitment involved in such builds.

This video provides an expert-level comparison of 5.56x45mm NATO and 7.62x51mm NATO calibers, drawing on combat experience and ballistic data. It highlights 5.56's advantages in logistics, recoil management, and close-quarters combat, while 7.62 excels in barrier penetration and long-range effectiveness. The 'best' caliber is mission-dependent.

This video from Civilian Tactical explores five distinct types of .223 Remington and 5.56 NATO ammunition. The host, demonstrating experienced firearm instruction, details the unique characteristics and intended applications of each round, including Hornady VMAX for varmint hunting, M855 'green tip' penetrators, visible tracer rounds, cost-effective steel-cased options, and Double Tap hollow points for defense. The presentation emphasizes understanding terminal ballistics and proper ammunition selection for various scenarios.

This video details the installation of a Geissele MK8 Super Modular Rail on an AR-15. Key steps include using a Geissele Reaction Rod for upper receiver stability, proper torquing of the proprietary barrel nut, and secure installation of the gas block and tube. The rail is then slid on and secured with two cross-bolts using a T-handle hex wrench. Final steps involve muzzle device installation and a thorough inspection.

Proper ammunition storage is crucial for maintaining reliability and safety. Avoid storing ammo in cardboard boxes in damp environments, as this leads to moisture absorption and corrosion. Utilize airtight containers like ammo cans and control humidity with desiccants like silica gel packs. Heat accelerates gunpowder and primer degradation, so store ammo at stable room temperatures. Reloading primers are particularly vulnerable to moisture and require strict airtight storage.

This video demonstrates how to upgrade an AR-15's A2 furniture to Magpul components. It details the removal of the A2 grip using a Bondhus hex set and the installation of a Magpul MIAD grip with interchangeable backstraps for improved ergonomics. The process also covers preparing and installing the Magpul PRS stock, highlighting its adjustable features for cheek weld and length of pull.

This video explores the custom Remington 11-87 shotgun used as a prop in 'No Country for Old Men.' The film required a semi-automatic shotgun with a suppressor, a combination not readily available at the time. Prop master Larry Zanoff details how a non-functional, 'homemade' looking suppressor was custom-built for the 11-87, with the iconic silenced sound effect achieved entirely in post-production.