Brendon's M27 Infantry Automatic Rifle (IAR) Clone

This guide details the process of building an M38-style rifle using a Brownells BRN-4 upper receiver. It covers the installation of an M27 profile barrel, an 11-inch quad rail handguard, and an HK-style gas block. The build also includes mounting a Leupold Mark 5 HD optic and the piston system, emphasizing proper torque specifications and alignment for a functional rifle.

This guide details the installation and key features of the Brownells BRN-4 Upper Receiver Kit. It highlights the HK416 compatibility, short-stroke piston system, and unique bolt design that prevents bolt tilt. The installation process is straightforward, fitting standard AR-15 lower receivers, and emphasizes the anti-rotation keyed handguard.

This video demonstrates the use of the Brownells BRN4/HK416 Bench Block, a specialized tool designed for AR builders. It facilitates the installation and removal of gas block pins on BRN4 and HK416 pattern rifles, including those with M277/M38 profile barrels. The non-marring polymer construction and integrated punch holders make it a valuable tool for preventing damage during the build process.

This guide details the basic disassembly of the Brownells BRN-4 upper receiver to showcase its HK416-inspired short-stroke gas piston system. The host, demonstrating high technical knowledge, explains how this design enhances reliability by preventing gas and carbon fouling from entering the receiver, a key advantage over traditional AR-15 direct impingement systems. The BRN-4 is presented as a robust alternative for AR-15 platform users seeking improved performance and durability.

This guide details the disassembly and reassembly of the HK MR556 A1, a civilian variant of the HK416. It covers the proprietary takedown pin mechanism, bolt carrier group components, and the external piston gas system. Key steps include separating receivers, removing the BCG, disassembling the bolt, and accessing the gas system by removing the handguard. The process highlights the unique HK components and their differences from standard AR-15 platforms.

This video provides a detailed guide to disassembling and reassembling the HK416, including its piston-driven operating system. Larry Vickers, a firearms instructor, walks through the process step-by-step, highlighting key differences between early and later models, as well as comparisons to the AR-15/M4 platform. The guide covers lower receiver components, bolt carrier group, and upper receiver assembly, emphasizing the proprietary HK design elements.

This guide, presented by Chief Instructor Ernie Medina and Firearms Trainer Brendon Arbolon of Tap Rack Bang, LLC, details the two main AR-15 configurations for California compliance: Featureless and Fixed Magazine. Featureless builds prioritize standard functionality with legal grip and stock limitations, allowing higher capacity. Fixed Magazine builds allow traditional features but require breaking the action to reload and are limited to 10 rounds. The instructors offer insights into the operational trade-offs of each system.

This guide details a training drill for shooting with both eyes open, as demonstrated by a professional firearms instructor from Tap Rack Bang, LLC. It emphasizes maintaining peripheral vision and faster target acquisition in dynamic self-defense scenarios, contrasting it with static precision shooting. The drill involves using taped shooting glasses to train the brain to focus on the target while keeping both eyes open.

This expert-level guide from Tap Rack Bang, LLC focuses on the critical technique of establishing a proper grip immediately after a pistol reload to enable rapid and accurate follow-up shots. The instructor emphasizes that a poor grip can cause the firearm to settle high, hindering speed, while a correct grip ensures stability and quick target re-acquisition. This technique is vital for defensive handgun use and competitive shooting.

This guide, presented by Chief Instructor Ernie Medina of Tap Rack Bang, LLC, details crucial pre-attack indicators for civilian defenders. It covers recognizing attacker body language, eye contact, hand gestures, and behavioral cues. The instruction emphasizes situational awareness, the importance of disengagement, and discreetly pre-staging hands near a concealed firearm for improved readiness in potential confrontations.