The Most Common AR-15 Failure Points

This guide details how to fix AR-15 gas issues by replacing the gas tube with one featuring a specific port size, such as the 0.070-inch option from Black River Tactical. This method aims to regulate gas flow, correcting ejection patterns without needing an adjustable gas block. The process involves disassembling the upper receiver, swapping the gas tube, and reassembling, with a focus on achieving a 3:30-4:00 o'clock ejection pattern for optimal performance.

This video details a troubleshooting process for an AR-15 experiencing a stuck bolt carrier group. The issue was ultimately identified as an incorrectly sized buffer tube detent that was too long, causing it to catch. The presenter demonstrates the process of identifying the problem, swapping parts, and testing functionality, emphasizing the importance of correct component fit for reliable operation.

This guide details how to address a seized AR-15 upper receiver, a common issue exacerbated by suppressor use and infrequent cleaning. The instructor, with extensive firearms experience, demonstrates a multi-stage approach starting with penetrating oils and progressing to more aggressive chemical cleaners when initial methods fail. The video emphasizes understanding dwell time and the effects of carbon buildup, offering practical solutions for a problem that can render a firearm inoperable.

This expert guide from the School of the American Rifle details how to identify and address rough carrier key bores in AR-15 bolt carrier groups. The instructor, demonstrating expert knowledge, explains how these manufacturing defects, particularly on Colt components, can lead to premature wear on the gas tube and reduced reliability. Solutions involve replacing the defective carrier key to ensure smooth operation and longevity of the firearm.

This video details issues with VKTR Industries bolt carrier groups, specifically focusing on improperly staked or torqued carrier key screws. The instructor explains how to identify inferior screws by their rounded heads and lack of full-length serrations, which prevent proper staking. He emphasizes the importance of correct screw type and staking/torquing for AR-15 carrier keys to prevent failures.

This guide details how to inspect an AR-15 Bolt Carrier Group (BCG) for critical defects, specifically peening marks on the carrier rails. Instruction from School of the American Rifle highlights how improper peening can lead to significant damage to the upper receiver. Proper inspection is crucial for ensuring BCG longevity and firearm safety.

This comprehensive review of the Mossberg 702 Plinkster, purchased for $99 from Walmart, details its features, performance, and value. The expert assessment highlights its practical accuracy for plinking and its surprisingly robust construction for the price point, manufactured by CBC in Brazil. It's presented as a reliable, budget-friendly option for recreational shooting.

This guide details the process of modifying a Hi-Point .45 pistol grip to accept an extended 20-round Redball Sports magazine and troubleshooting potential feeding issues. It covers grip modification, magazine loading, and feed lip adjustments for reliable performance, as demonstrated by an experienced firearm reviewer.

This guide details the analysis of a rifle used in a shooting incident involving Charlie Kirk. It covers identifying calibers by sound, assessing shot distances, comparing rifle models like the Mauser, Weatherby Vanguard, and Thompson Center, and understanding concepts like cold bore shots to evaluate shooter skill. The analysis highlights the .30-06 Springfield caliber and the characteristics of bolt-action rifles.

This video clarifies the confusion surrounding various 7.62mm cartridges, highlighting their distinct origins, applications, and ballistic differences. It details calibers from the 7.62x25 Tokarev pistol round to powerful rifle cartridges like the 7.62x51 NATO and 7.62x54R Russian, emphasizing that despite the shared '7.62' designation, bullet diameters and performance vary significantly. Key firearms like the AK-47, SKS, Mosin Nagant, and AR-10 are associated with their respective 7.62 rounds.