How To Keep Your Gunsmith Happy! — GMP #227

This guide details the disassembly process for the gas trap variant of the M1 Garand, highlighting its differences from the later, more common models. It involves removing the bolt and operating rod first, then a specific screw to release the gas trap, followed by the sight block, before the gas trap assembly can be rotated off. This early design proved less reliable than the later gas piston system.

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 guide details the process of replacing the mainspring on a Swiss Luger 1900. It covers identifying a failed mainspring, the correct direction for removal, manipulating the grip safety, compressing and installing the new spring with safety precautions, and reassembly. The new spring is noted to be significantly stiffer, requiring a specific operational technique for this model.

This video addresses the critical issue of Glock barrel compatibility between generations, specifically Gen 5 and Gen 6 models. It highlights that while a Gen 5 barrel may physically fit into a Gen 6 Glock, it does not guarantee proper function and can introduce safety concerns. The presenter emphasizes the importance of using generation-specific parts to ensure reliable operation and prevent potential malfunctions.

Roy Huntington demonstrates the process of bead blasting stainless steel 1911 parts to achieve a uniform satin finish. The video highlights the use of a modified Harbor Freight bead blasting machine and glass beads, emphasizing the importance of circulation for consistent results. This technique is presented as a valuable method for improving the aesthetics and uniformity of firearm components.

This guide details the simplified field stripping process for the Laugo Arms Remus pistol, as demonstrated by an expert from Forgotten Weapons. The Remus utilizes a new disassembly lever, eliminating the need for tools or pins required by the original Alien model. This process is crucial for routine cleaning and maintenance.

This guide, informed by Roy Huntington, Editor of American Handgunner Magazine, details the critical differences between buckshot and birdshot for home defense. It covers their physical characteristics, penetration capabilities through walls, and effectiveness at close range. The advice emphasizes choosing a load based on concerns about over-penetration while stressing the universal importance of training, target identification, and using a light for any home defense scenario.

This guide details the field stripping process for a 1911 pistol, presented by Roy Huntington, Publisher of American Handgunner. It covers essential safety checks, step-by-step disassembly, and reassembly, emphasizing techniques to prevent damage. An alternative 'cheat' method for faster disassembly is also demonstrated, along with advice on using specialized tools for tight components.

This video showcases an exceptionally rare find: a first-generation 1873 Colt Single Action Peacemaker, discovered via metal detecting in Arizona. The expert speaker details its museum-quality condition, dating it to 1875, and analyzes the authentic patina and wear, including specific gutta-percha grip details and muzzle wear from holster friction. The firearm's discovery context among homestead ruins adds to its historical narrative.

This guide, presented by Roy Huntington, Editor of American Handgunner Magazine, outlines an efficient '5-minute clean' for modern semi-automatic pistols like the Glock 26/27. It emphasizes that over-cleaning is unnecessary and can cause premature wear. The process focuses on targeted cleaning of critical areas like the barrel and slide rails, with minimal lubrication applied only to high-friction points. Proper function checks after reassembly are also highlighted.