Tech Tip: BRN-180 .350 Legend Feed Ramps

This guide details how to modify AR-15 magazines for reliable feeding of the .350 Legend cartridge, a common issue due to the straight-wall design. The video, from Banana Ballistics, highlights that standard AR-15 platforms often require adjustments to magazine feed lips to prevent jamming. Expert insights also cover the .350 Legend's power, cost-effectiveness, and limitations regarding bullet selection.

This guide provides expert-level troubleshooting steps for common issues encountered with 300 Blackout FRT (Firearm Research & Technology) setups, drawing on hands-on testing and component analysis. It covers buffer weight, spring selection, ammunition variability, suppressor interaction, and feed ramp polishing, offering practical solutions for achieving reliable function. The instruction emphasizes a methodical approach to diagnosing and correcting malfunctions in direct impingement AR-15 platforms chambered in .300 Blackout.

This guide details the installation of the A3 Tactical Triad Bullpup Chassis onto an AR-15 platform, specifically using a Palmetto State Armory lower and a Brownells BRN-180 upper. It covers the integration of the upper and lower receivers within the chassis and the attachment of aftermarket accessories like the True North Concepts foregrip. The process is demonstrated by a firearms instructor with extensive technical assembly knowledge.

This video demonstrates how to identify a 'clocked' barrel extension in an AR-15 upper receiver, a common issue arising from over-torqued barrel nuts. The instructor highlights visual cues like misaligned feed ramps and explains potential causes, including bent index pins or manufacturing defects. The guide also suggests a practical test using a handguard to confirm the misalignment.

This guide, based on expert instruction from School of the American Rifle, details the critical importance of proper feed ramp blending on AR-15 upper receivers. It highlights the severe consequences of improperly grinding aluminum feed ramps, such as removing protective anodizing and leading to premature wear and failure. The guide emphasizes careful diagnosis and vetting of gunsmiths to prevent costly damage to expensive components.

This guide details the disassembly and inspection process for Palmetto State Armory (PSA) AR-15 upper receivers, as demonstrated by an expert armorer from School of the American Rifle. It covers critical checks for FSB alignment, headspace, barrel straightness, and barrel extension clocking, highlighting common assembly errors like over-torqued barrel nuts and misaligned components. The procedure emphasizes the use of specialized tools for accurate diagnostics and repair.

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.