Beretta M9A4: The trigger is not that complicated

This guide explains the internal mechanics of double-action and double-action-only (DAO) revolver triggers, building on single-action principles. It details the roles of the trigger, hammer, hammer strut, and mainspring in both firing cycles, emphasizing the simplicity and reliability of revolver mechanisms. Instruction is provided by TheYankeeMarshal, who uses animated graphics to illustrate complex internal firearm operations.

Roy Huntington of American Handgunner Magazine explains the crucial difference in trigger press between double-action and single-action modes on semi-automatic pistols. He emphasizes using more finger and a slower, staged press for the initial double-action shot, followed by a smooth final press. After the slide cycles, the transition to single-action requires a careful, smooth press to maintain sight alignment until the hammer falls, likening the precision needed to not disturbing an 'imaginary dime' on the front sight.

This video discusses the mechanics of firearm triggers, specifically comparing striker-fired and double-action systems. It highlights that the initial takeup on a striker-fired trigger is not significantly different from the first pull of a double-action trigger, especially if the latter is in halfcock. The speaker emphasizes that subsequent shots on a striker-fired system involve a shorter reset and sear trip, resulting in less overall work for the shooter.

This video compares the Smith & Wesson M&P 340 J-Frame revolver and the Glock 36 .45 ACP pistol, emphasizing the critical importance of mastering double-action trigger control for revolvers. The instructor highlights that proficiency with a revolver, especially its heavy double-action trigger, is a 'dying art' and requires significant practice, making it an 'expert's weapon' for many. While semi-automatics offer higher capacity and simpler operation, revolvers can be fired while pressed into an assailant, a key defensive advantage.

This video demonstrates and compares the double-action (DA) and single-action (SA) trigger pulls of three popular pistols: the Jericho, Sig Sauer P220, and Beretta M9A4. Viewers are encouraged to observe the differences and vote on their preferred trigger pull in the comments, providing a practical comparison for firearm enthusiasts.

This comprehensive guide covers seven essential pistols recommended by firearms expert Hegshot87, spanning various categories from duty-grade to micro-compacts. It details specific models like the Beretta M9A3, CZ Shadow 2, Glock 19, and FN Reflex, highlighting their unique features such as falling block actions, internal frame rails, and reliability. The content emphasizes practical advice on firearm selection, understanding different action types, and the importance of .22 LR firearms for training.

This video demonstrates a rapid fire drill focusing on efficient magazine reloads and immediate resumption of fire. The shooter, equipped with tactical gear and an M4 Carbine with an ACOG optic, showcases proficient weapon manipulation and recoil control. The drill emphasizes maintaining a high rate of fire while executing smooth tactical reloads.

This review of the Springfield M1A Scout Squad after 7,000 rounds highlights its robust reliability, especially with steel-cased ammunition. The instructor, speaking with high authority from extensive practical experience, details maintenance tips like using grease for lubrication and warns about potential malfunctions caused by glove interference with the operating rod. Cosmetic wear, such as brass marks on the stock, is viewed as a 'badge of honor' from heavy use.

This guide, presented by Regular Guy Training LLC, advocates for using readily available and cost-effective automotive lubricants for firearms. The instructor, drawing on military experience with belt-fed weapons and high-volume shooting, explains why conventional motor oil and high-temperature lithium grease are superior and more economical than many specialized gun lubes. It covers platform-specific recommendations, including considerations for cold weather and different firearm designs like AR-15s, AK-47s, and Glocks.

This guide details building a reliable AR pistol, emphasizing component selection for hard-use scenarios. It covers barrel and gas system choices, DI vs. piston considerations, and the importance of quality upper and lower receivers. The build focuses on practical reliability and shooter ergonomics, including ambidextrous controls and essential accessories, with a total cost around $1600 for the base build.