Brownells - CMMG 300 Blackout 16" AR-15/M16 Barrels

This video from Brownells, featuring Caleb, provides a ballistic comparison of Hornady Critical Defense .223 Remington ammunition against standard 55-grain Full Metal Jacket (FMJ) rounds. The testing, conducted at Big Spring Shooting Complex using ballistic gel, highlights the superior terminal performance of the Critical Defense round, demonstrating a significantly larger and more effective wound channel. The presenter argues for its value in self-defense scenarios due to its rapid energy dump and stopping power on unarmored targets, contrasting it with the over-penetration and minimal damage potential of FMJ rounds.

This video details the first shots of a custom 6mm ARC AR-15 build. The presenter highlights specific components like a Rainier Arms barrel, BCM thermal fit, Griffin Armament lower, and Adabal 110 optic. Initial testing reveals cycling issues, particularly with ASC magazines, leading to troubleshooting and a comparison of Faxon and Centurion bolt carrier groups. Velocity data and accuracy observations are provided, with a focus on identifying and resolving build-specific problems.

This video from Polenar Tactical explores the aesthetic choice between Flat Dark Earth (FDE) and black finishes for AR-15 style rifles. While the visual evidence shows an FDE rifle with accessories, the core of the discussion revolves around personal preference in firearm coloration, touching on how different finishes might be perceived or chosen for various reasons, without delving into performance differences.

Elliott Delp, an experienced firearm instructor, reviews the Global Ordnance Monolith AR-15 upper receiver priced at $550. The review highlights the product's monolithic barrel design, where the barrel, gas block, and muzzle brake are a single piece, intended to increase system reliability. Delp demonstrates proficient handling and provides detailed insights into the AR-15 platform.

This video review from Regular Guy Training LLC provides an expert assessment of the Brownells BRN-4 upper receiver. The instructor, demonstrating high authority and expertise, critically evaluates the current AR-15 market, highlighting prevalent quality control issues and poor longevity in lower-tier brands like Del-Ton, PSA, and Smith & Wesson. The BRN-4, featuring a Geissele rail and priced at $1,900, is presented as a superior option that exceeds expectations in reliability and performance, justifying its cost.

This video details an impressive durability test of the Brownells BRN-4 rifle following an internal case failure. The speaker, demonstrating high authority, recounts how the BRN-4 withstood an ammunition-induced explosion with minimal impact. Subsequent testing of 4,000 rounds post-incident showed zero performance loss, underscoring the firearm's exceptional resilience.

This guide details the installation of a Geissele MK8 Super Modular Rail on an AR-15 platform. It covers securing the upper receiver, installing the barrel nut, gas system, and the rail itself, emphasizing the use of specialized tools and proper torque specifications. The process requires an intermediate skill level and careful attention to detail for a secure and functional build.

This guide, based on expert instruction from Brownells, details essential practices for proper ammunition storage. It emphasizes using airtight containers, managing humidity with desiccants, and maintaining stable temperatures to ensure ammunition reliability and safety. Proper storage is crucial for preventing corrosion and propellant degradation, especially for sensitive components like primers.

This guide details the process of upgrading an AR-15 from standard A2 furniture to Magpul components. It covers the removal of the A2 pistol grip and installation of the Magpul MIAD Grip and Magpul PRS Stock. The video demonstrates efficient assembly using specialized tools, highlighting the ergonomic benefits and adjustability of the Magpul parts. Instruction is provided by Brownells, a recognized industry authority.

This entry details the creation of a movie prop suppressor for a Remington 11-87 used in 'No Country for Old Men.' Prop master Larry Zanoff explains how the suppressor was designed to look homemade and was non-functional, with sound effects added in post-production. The process highlights the creative problem-solving involved in film armory.