How To Clean Your AR-15 - OpticsPlanet How To

This guide details the process of diagnosing and fixing a significant rail wobble issue on a new Daniel Defense Mk18 upper receiver. The primary cause identified was a hand-tight barrel nut, compromising the stability of the RIS II rail system. The steps involve disassembly, inspection of the barrel nut, proper tightening with an armorer's wrench and torque wrench, and reassembly. This addresses a critical quality control failure that can affect firearm accuracy and reliability.

This video from AT3 Tactical explores the function and necessity of the forward assist on AR-15 style firearms. It delves into the component's historical origins, specifically its introduction during the Vietnam War era, and examines its practical applications and potential drawbacks on modern rifles. The content aims to educate viewers, whether they are new to building or modifying AR-15s, to make an informed decision about the forward assist's role in their firearm setup. The video also touches on specific drills and potential problems associated with the component.

This entry details the unique XR-86 custom rifle, a 1986 build by Wilfred Ellis. It masterfully combines components from an M60 (flash hider), an M14 (gas system), and an AR-15 (trigger, bolt, locking system). The AR-15 trigger is notably rotated 90 degrees, and its bolt is integrated with the M14 gas system, showcasing advanced gunsmithing.

This video from School of the American Rifle highlights critical manufacturing defects in AR-15 bolt carrier keys, specifically focusing on rough internal bores. Lead instructor demonstrates how a poorly finished carrier key can cause significant friction, premature wear on components like gas tubes, and operational issues, contrasting a problematic new Colt carrier with a well-functioning older model. The expert emphasizes the importance of a smooth bore for reliable function and longevity of expensive parts.

This guide, presented by an expert firearms instructor, details the benefits and installation of adjustable triggers for platforms like the AR-15. It covers understanding trigger mechanics, adjusting pull weight, reset, and overtravel, and highlights ideal users for these components. The instruction emphasizes safety and practical application for competition and precision shooting.

This guide, presented by School of the American Rifle, details how to identify and replace a malformed weld spring in an AR-15 Delta Ring assembly. A misaligned weld spring can cause the gas tube to be pushed off-center, leading to excessive friction or damage to the carrier key and gas tube. Replacing the faulty component ensures proper gas tube alignment and firearm reliability.

This comprehensive guide details the professional process of mounting a riflescope on a bolt-action rifle. It covers selecting appropriate bases (one-piece vs. two-piece, dual dovetail), preparing the receiver, installing and torquing bases and rings, lapping rings for perfect scope contact, setting eye relief, and bore sighting. The video emphasizes meticulous attention to detail, proper torque values, and alignment techniques for optimal accuracy and scope longevity.

This video provides a comprehensive overview of night vision devices, detailing their evolution through different generations (Gen 1-4) and technologies like White Phosphor and Digital NV. It covers various device types including monoculars, bi-oculars, and binoculars, as well as weapon-mounted systems like dedicated scopes and clip-ons. Key technical specifications such as Gain, Resolution, Signal-to-Noise Ratio, and Autogating are explained, offering valuable insights for selecting the right NVG for hunting, law enforcement, or military applications.

This tutorial demonstrates how to custom-fit foam for a Pelican Storm 3300 gun case. Key steps include planning layout for balanced weight distribution, using a mirror image technique for clean outlines, and employing an electric carving knife for precise cuts. The video also shows how to utilize the space beneath the main foam layers for storing additional accessories like cleaning rods and targets.

This tutorial demonstrates how to tune an AR-15 adjustable gas block for optimal reliability. Key steps include starting with the gas block open one turn, incrementally opening it until the bolt locks back on an empty magazine, and then adding a reliability buffer of 0.5 to 1.0 additional turns. Finally, the setting is secured using blue Loctite after recording the adjustment screw's rotation count.