Videos tagged with Gas Port Size

This video provides an in-depth review of the Centurion Arms 14.7-inch cold hammer-forged, chrome-lined AR-15 barrel. It details the barrel's specifications, includes a borescope inspection of the chamber, throat, and crown, and presents comprehensive range testing results with three different ammunition types. The review highlights accuracy data, velocity readings, and offers a comparative analysis against other barrels tested.

This video details the process of diagnosing and rectifying severe overgassing issues in a 14.5-inch AR-15, specifically the Griffin Armament MK2. The presenter, drawing on experience from building numerous rifles, identifies an oversized gas port as the primary culprit after experiencing ejection problems, cycling failures, and accelerated wear. The guide includes using pin gauges to measure the gas port and recommends replacing the barrel if the port is found to be too large, emphasizing the importance of correct gas system tuning for optimal rifle performance.

This video details a comprehensive inspection of Ruger AR556 upper receivers, focusing on critical alignment and assembly checks. It covers verifying front sight post and barrel extension alignment, assessing barrel nut torque, measuring gas port size, checking feed ramp compatibility, and diagnosing potential issues with bolt carriers and receiver tolerances affecting magazine compatibility. The expert guide provides step-by-step instructions for these checks, highlighting common problems and their potential impact on firearm function and accuracy.

This video explains the rationale behind choosing a mid-length gas system for an 18-inch barrel on AR-platform rifles, specifically addressing the Hansen model. It details how a mid-length system allows for a smaller gas port, more rifling to stabilize the projectile, and improved cycling balance compared to a rifle-length system on the same barrel length. The instructor emphasizes that a larger gas port is required for longer gas systems to compensate for reduced dwell time and less rifling engagement.

This video reviews the Anderson AM15 Dissipator rifle, a retro-inspired AR-15 variant. The hosts, Matt and Ka, discuss its unique 16-inch barrel combined with a rifle-length gas system, a design originating from Vietnam War modifications. They explain how Anderson addresses potential cycling issues by slightly increasing the gas port size and discuss the resulting dwell time. The rifle is tested for reliability, demonstrating consistent ejection and cycling, even during rapid fire.

This video reviews the Rifle Speed Adjustable Gas Block, highlighting its high price point and unique features. The presenter details its tool-less adjustment mechanism, the requirement for a proprietary gas tube, and its effectiveness in taming an over-gassed system. While acknowledging its premium quality and adjustability, the reviewer questions its value proposition for the average shooter compared to properly gassed barrels.

This video details how to fix a severely over-gassed 12.5-inch AR-15 upper receiver, identified by its aggressive recoil and ejection. The primary issue stems from a massive 0.093-inch gas port on the barrel. The presenter demonstrates the effectiveness of the BRT EZ Tune Gas Tube, which features a smaller, pre-drilled gas port to regulate gas flow, transforming the firearm into a pleasant shooting experience.

This video offers a manufacturer spotlight on Sons of Liberty Gun Works (SOLGW), featuring an interview with founder Mike Mihalski. The discussion delves into the company's philosophy behind building premium-grade AR-15 rifles, emphasizing the barrel as the core component and the critical role of proper gassing for optimal performance, especially when using suppressors. Mihalski shares his journey from a dedicated AR shooter to a manufacturer focused on creating duty-grade firearms that withstand hard use. The interview also touches upon SOLGW's commitment to customer engagement and active support for the Second Amendment, framing the company as more than just a rifle maker but a cause. Hints about future product developments are also provided.

This Q&A session from Small Arms Solutions delves into the critical topic of gas port sizing on AR-15 and AR-10 platforms. The instructor explains how gas port diameter directly impacts the weapon's cycle of operation, leading to issues like short-stroking with insufficient gas or excessive wear and component damage with too much gas. The discussion also covers how ammunition type and gas port erosion can affect cycling, and the importance of proper gas block installation.

This live Q&A session covers a wide range of firearms topics, including magazine recommendations, rifle component compatibility, historical firearms analysis, and ammunition availability. The host, a firearms instructor, discusses specific models like the Duramag, LWRC rifles, FN's production of M16s/M4s, and the Beretta ARX. He also addresses common concerns such as AK vs. AR reliability, the impact of barrel length on ballistics, and the current ammunition shortage.

This video provides a detailed physical inspection of two 12.5-inch Hodge 5.56 carbine gas barrels. The instructor meticulously gauges gas port sizes, checks headspace, throat dimensions, erosion, straightness, and thread runout. A borescope is used to examine the internal condition of the barrels, including the chamber, rifling, and crown, highlighting the high-quality finish typical of match-grade barrels.

This review of the SOLGW EXO2 12.5-inch upper reveals a product with high-quality machining and a competitive price point, offering good value. However, it falls short of the hype regarding its gassing and recoil characteristics, exhibiting significant blowback when suppressed and premature cam pin wear. The lifetime barrel replacement warranty is a notable benefit.