Brownells - WMD Guns Nickel Boron Bolt Carrier Groups

This video discusses a potential issue where the heavy bolt of the SIG Sauer MPX firearm can cause damage to FRT (Forced Reset Trigger) triggers. A meeting with an FRT manufacturer confirmed that the MPX's bolt can 'smash' the hammer of the FRT trigger, leading to breakage. The speaker expresses surprise at this harshness, despite acknowledging the MPX as an excellent firearm.

This AT3 Tactical video seeks community input for their AR-15 barrels guide, specifically focusing on the optimal barrel length. The instructor, demonstrating expertise through a multi-episode series, encourages viewers to share their opinions and justifications for the 'absolute best' barrel length. This interactive approach aims to gather diverse perspectives for an upcoming episode.

This video from Line45, hosted by Scott, explores seven surplus rifles that rival or surpass the AR-15 in durability, power, and real-world utility. It delves into the historical context, mechanical features, and ballistic performance of iconic firearms like the Mosin-Nagant, Mauser M48, Lee-Enfield, M1 Garand, PTR-91, WASR-10, and Zastava M70, highlighting their robust construction and suitability for harsh conditions.

Amber and Doshie from Exile Armory showcase a wide array of new firearms and accessories. The video features various pistols, rifles, shotguns, and suppressors from brands like FN, Q, Bergara, Springfield Armory, and Beretta, with detailed pricing and some technical specifications provided. The presentation is casual and informative, highlighting new inventory for customers.

Elliott Delp reviews a unique Global Ordinance AR-15 upper receiver featuring a monolithic barrel design, integrating the muzzle device, gas block, and barrel into a single unit to eliminate potential failure points. He demonstrates how to effectively regulate gas for suppressed fire using an adjustable bolt carrier group, highlighting its flawless performance and correct gassing.

This video from Regular Guy Training LLC, featuring the BRN-4, delves into the practical differences between piston-driven and traditional direct impingement AR-15 systems regarding carbon fouling and long-term reliability. The instructor, demonstrating expert-level knowledge, highlights how piston systems maintain a cleaner action for significantly more rounds, contrasting it with the fouling inherent in direct impingement designs. The discussion also touches upon potential storage-related issues in piston ARs after extensive suppressed use.

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.