How to Fix an over-gassed AR15

This guide outlines the conceptual assembly of the unique XR-86 custom rifle, a project by Wilfred Ellis. It details the integration of parts from an M60, M14, and AR-15, highlighting the custom gunsmithing required to combine these disparate systems into a functional firearm. The process involves careful mating of bolt, gas, and trigger mechanisms.

This video delves into the history and technical aspects of Colt's four-way enhanced rifle fire control group, a system offering Safe, Semi, Auto, and Burst modes. The expert instructor, with extensive experience at Colt, details the evolution of the burst cam, patent information, and specific rifle models that utilized this complex mechanism. It highlights practical challenges and historical context, including issues faced by the Greek Army and the eventual discontinuation of the program.

This guide details the installation and tuning of a Global Ordinance monolithic upper receiver for an AR-15. It highlights the benefits of a monolithic barrel design and the necessity of an adjustable bolt carrier group for proper gas regulation, especially when using a suppressor. The process involves attaching the upper, installing the BCG, mounting a suppressor, and then fine-tuning the gas system for optimal performance in both suppressed and unsuppressed firing conditions.

This guide details the process of lapping an AR-15 receiver to ensure proper barrel alignment for improved long-range accuracy. Instructor Stephen Caleb from Brownells explains that receiver faces can be slightly out of alignment, leading to barrel runout. The process involves using a specialized lapping fixture and aluminum oxide lapping compound with a drill to create a perfectly flat receiver face. This ensures the barrel seats flush and square, critical for precision shooting beyond 500 yards.

This video details the troubleshooting process for an unreliable CMMG MK3 AR-10 chambered in .308 Win. The host, demonstrating high technical authority, installs and tests the RifleSpeed Gas Control adjustable gas block to address cycling issues exacerbated by a short dwell time and cold weather. The guide focuses on the installation and adjustment of this specific component to improve firearm reliability.

This guide details the installation of the Blackout Defense Dual Barrel Nut System, a unique mounting solution for AR-15 style upper receivers. The system utilizes primary and secondary barrel nuts with dual taper locking to ensure bore centricity and a highly rigid barrel mount. Proper alignment of internal tapers is crucial for optimal performance.

This entry details the safe handling of the T G-67 M-SOFT training hand grenade, as demonstrated by Ziga from Polenar Tactical. It emphasizes the critical role of the safety pin and spoon mechanism in preventing accidental detonation. The M-SOFT variant is likely for airsoft or training purposes, highlighting the importance of understanding device types for safety.

This expert guide from Polenar Tactical demonstrates the critical technique for applying a CAT-style tourniquet to control severe limb hemorrhage. The instruction emphasizes correct placement ('high and tight') and windlass application to stop bleeding, acknowledging the necessary pain involved. The video highlights that despite discomfort, proper tourniquet use is a life-saving measure.

This guide details the operation of the TAG 18 Smoke White grenade, as demonstrated by Polenar Tactical. It covers the basic mechanical components and the activation process, emphasizing its use for concealment or signaling. The instruction comes from an experienced source, offering a practical look at this tactical accessory.

This guide details the operation of the FBG-6 Flash Bang 2.0, a pyrotechnic distraction device. It emphasizes the function of the safety lever and the 2.0-second delay. The demonstration highlights that real flashbangs disorient through sound and flash, not the extreme visual effects seen in media. Expert instruction from Polenar Tactical covers safe handling and deployment principles.