Videos tagged with Sear Engagement

This video, from Tática Civil, addresses a concerning firearm malfunction where a new PSA Dagger build exhibits binary or full-auto-like firing behavior, firing multiple rounds per trigger pull. The speaker, demonstrating a clear understanding of firearm mechanics and component pricing, compares it to a standard Glock's function. The build, costing around $180 with a PSA Dagger frame and optic-cut slide, appears to have a trigger issue requiring diagnosis.

This video demonstrates a critical safety failure in a Colt Gold Cup 1911, where the firearm discharged without trigger manipulation. The demonstration highlights a dangerous mechanical issue, potentially related to sear or hammer engagement, leading to an uncommanded discharge or 'slam fire'. Proper gun safety protocols, like keeping fingers clear of the trigger guard, are emphasized during the demonstration of this malfunction.

This video provides a clear explanation of pistol trigger reset, a concept often misunderstood by new shooters. It details the re-engagement point of the trigger and sear, and how the distance of trigger travel impacts perceived reset. Shorter, audible, and tactile resets are highlighted as preferable for quicker follow-up shots. The video is presented as instructional content for firearms training and promotes a website for further learning or class booking.

This video from Brownells, featuring hosts Caleb and Steve, serves as a cautionary guide against performing trigger jobs on mil-spec AR-15s due to inherent design limitations and metallurgy. They explain how altering sear geometry can lead to dangerous malfunctions. While minor burr removal might be acceptable, significant stoning is discouraged. The hosts recommend aftermarket triggers like the ALG Defense Enhanced Mil-Spec Trigger as a safer alternative for improving trigger feel and performance.

This video compares and contrasts the Snaphaunce and Flintlock firearm ignition systems, focusing on the mechanics of how the sear engages in shear versus compression. The creators emphasize that this is an educational demonstration for those with existing skills and explicitly warn against attempting the procedures without proper expertise. The video also includes a call to action for viewers to support their work on Patreon.

Dropping a 1911 slide on an empty chamber can be harmful, especially to match-grade triggers with light pulls and reduced sear engagement. While service pistols with heavier triggers and more engagement are more resilient, repeated impact can cause 'hammer follow' and batter the sear. The myth is plausible because while occasional drops might not damage robust components, certain trigger setups are susceptible to degradation over time.

This video, presented by Larry Potterfield, founder of MidwayUSA, clearly explains the mechanical differences between 'cock on open' and 'cock on close' bolt action systems. He demonstrates how the Mauser 98 utilizes 'cock on open,' where the spring is compressed during bolt lift, while the Mauser 96 uses 'cock on close,' compressing the spring during the bolt's forward and downward closing motion. Understanding this distinction is key to appreciating the operational feel of different bolt-action rifles.

This video details the challenges of repairing a French Modele 1874 revolver with hand-fitted parts. A replacement hammer from Numrich failed due to minute differences in sear engagement, highlighting how original hand-fitting prevents simple part interchangeability. The recommended repair involves welding and machining the original firing pin rather than replacing the hammer.

This video details the professional installation of a Wilson Combat thumb safety on a 1911 pistol. It covers the critical steps of fitting the safety stud to the sear for proper engagement, emphasizing precise filing and frequent checks. The process ensures the safety functions correctly, blocking the sear when engaged and allowing a clean trigger pull when disengaged.

This video details the precise assembly of a rifle trigger, emphasizing the critical role of each component like the trigger, sear, and housing. It highlights the use of specialized tools such as hydraulic presses and trigger scan devices for accurate adjustments of pull weight, overtravel, and sear engagement. The process ensures maximum rifle accuracy and safety through meticulous verification.