Videos tagged with Sear

This video provides a comprehensive explanation of how AR-15 triggers function, detailing the mechanics of both single-stage and two-stage systems. It breaks down key components like the sear, disconnector, and hammer, and explains critical concepts such as trigger break, reset, pull weight, and creep. The instructor also touches on manufacturing processes like Wire EDM and the differences between mil-spec and drop-in triggers, offering advice for trigger upgrades.

This video, titled 'Bore Buddy - Not Full Auto FRT', appears to be a discussion or demonstration related to firearm components, specifically the 'Bore Buddy' and its connection or lack thereof to 'Full Auto FRT' (likely referring to a Full Auto sear or trigger mechanism). Given the title's focus on a specific component and its function, the content is likely technical in nature, potentially exploring modifications, functionality, or limitations of this firearm part. The absence of a transcript requires an assumption that the video delves into the operational aspects of the Bore Buddy.

This video provides an expert-level look at the Carcano M38 rifle, focusing on its unique bolt-action safety mechanism. The instructor, demonstrating high authority and expertise, details how to engage and disengage the safety, highlighting its clever design rooted in older firearm technologies. The assessment emphasizes the rifle's historical context and mechanical intricacies, offering valuable insights for firearm enthusiasts and historians.

This guide details a gunsmithing repair for an Artisas pistol experiencing hammer follow or failure to fully reset due to trigger play. Expert Morgan demonstrates how to diagnose the issue by identifying wear on the trigger cage and then performing a precise modification by chamfering the trigger cage's lower edge to correct abnormal contact. This advanced technique addresses a subtle mechanical malfunction, restoring reliable function.

The US Air Force Global Strike Command is returning the Sig Sauer M18 service pistol to duty after a pause due to an incident involving an uncommanded discharge. A thorough inspection revealed issues with component wear on 191 out of 125,000 M18 pistols, specifically on safety levers, striker assemblies, and sears. The Air Force has cleared the M18 of uncommanded discharges without a trigger pull, but recommends owners of M17, M18, and P320 models consider having their firearms inspected by SIG Sauer.

This video details the Air Force Global Strike Command's decision to return the M18 pistol to duty after a thorough inspection. The investigation, prompted by a fatal incident, found that initial concerns of uncommanded discharges were unfounded. Instead, issues were identified as component wear on safety levers, striker assemblies, and sears in a small percentage of the M18 inventory. The Air Force is implementing enhanced inspection procedures and repairs to address these wear-related issues, aiming to ensure the reliability and safety of the firearm for its personnel.

This guide details the operation and safety features of the Interdynamic MP-9 SMG, the predecessor to the TEC-9. It covers understanding the open-bolt system, fire selector, collapsible stock, and the unique receiver notch safety. The explanation also touches upon the internal trigger mechanics for semi-automatic fire, highlighting the disconnector's function. Instruction is provided by Ian McCollum, demonstrating expert-level knowledge of historical firearms.

This video breaks down the fundamental mechanics of firearm triggers, explaining the critical roles of the sear, hammer, and their pivot points. It emphasizes the importance of geometry, particularly the 90-degree tangent relationship at the sear's contact point, and how this applies to both rotating hammers and sliding strikers. The instructor also highlights the physics of pressure and area in trigger components and the key adjustments for engagement, overtravel, and weight.

This report details a newly filed patent by Sig Sauer, attributed to engineer Brian McDonald, aimed at addressing internal safety mechanisms in the P320, M17, and M18 pistols. The patent, US20250164203-A1, focuses on enhancing the sear and striker engagement, as well as trigger functionality, to prevent unintended discharges. The video suggests these are 'ghost safety upgrades' being implemented without public acknowledgment, potentially in response to ongoing safety concerns and incidents.

This video discusses controversial ATF enforcement actions, specifically focusing on cases where individuals were prosecuted for items deemed illegal by the ATF. It highlights instances involving the engraving of firearm component designs on metal business cards and the sale of replica RPGs, questioning the ATF's interpretation and enforcement of existing laws.

This video provides an expert-level overview of the Voere SAM-180, a semi-automatic variant of the American 180. The instructor, demonstrating deep technical knowledge, details its unique closed-bolt firing mechanism, rotary safety, detachable stock, and impressive 177-round magazine capacity. The explanation of the sear and striker interaction, highlighting the absence of a disconnector, showcases the firearm's clever engineering.

This video focuses on a trigger job for a KMR Umbra e Spectra firearm. The description highlights the meticulous tuning of the trigger pull to make the double-action pull as similar as possible to the single-action pull, aiming to leverage muscle memory even when starting with the hammer down. The updated sear plane is credited for a smoother and more defined single-action trigger break. The video encourages viewers to compare their own triggers to assess the improvement. It includes a strong safety disclaimer, emphasizing that all work is performed by authorized personnel in licensed facilities and reiterating safe firearm handling practices at the range.