Firearm Maintenance: Remington 870 Reassembly — Part 4/4

This guide details the disassembly and reassembly process for the Mossberg 940 Pro SPX tactical shotgun. It covers removing the trigger housing, barrel, bolt, and gas system components, highlighting the self-cleaning gas piston system and nickel boron coatings. Proper reassembly ensures the firearm functions correctly and safely.

This guide details the reassembly process for the Browning BPS shotgun, as demonstrated by an expert from Brownells. It covers critical steps like installing the carrier, bolt, slide, cartridge stops, and trigger assembly, emphasizing proper alignment and orientation of components. The guide concludes with securing the barrel and performing essential safety and function checks to ensure reliable operation.

This guide details the disassembly and inspection of the Winchester Model 12 military variant, often called the 'Trench Gun'. Expert Jonathan Ferguson from the Royal Armouries highlights key features like the heat shield and bayonet lug, and the internal tilting bolt mechanism. Proper maintenance is crucial for this historical firearm.

This video provides an expert-level examination of the rare Remington Model 10 trench gun, focusing on its historical context and specific features. The speaker, demonstrating high authority, details how to identify authentic US-marked examples, including crucial markings like the 'U.S.' and ordnance bomb stamp. Key identification points such as serial number ranges, the unique takedown frame, and the correct placement of rivets on the walnut handguard are meticulously explained. The analysis extends to distinguishing original trench gun configurations from later 'riot' length cut-downs by examining the bayonet lug and barrel. The historical context suggests these firearms were primarily used for domestic guard duty rather than overseas combat.

This guide details the methodical cleaning process for a Hatsan Pump-Action Shotgun, as demonstrated by an experienced firearm enthusiast. It covers disassembly, inspection for fouling, application of specialized cleaning agents like Chistostvol gun oil, and the use of specific brushes for the barrel and chamber. The process concludes with a final lubrication and reassembly, emphasizing a systematic approach to firearm maintenance.

This guide details essential modifications for the SDS Imports Civet12 shotgun, based on expert analysis. It covers critical steps for improving feeding reliability by dremeling and polishing the chamber feed ramp, and smoothing the action with anti-seize. These modifications are recommended for experienced users willing to perform gunsmithing to enhance firearm performance.

This guide details the installation of a Geissele MK8 Super Modular Rail on an AR-15 platform. It covers securing the upper receiver, installing the barrel nut, gas system, and the rail itself, emphasizing the use of specialized tools and proper torque specifications. The process requires an intermediate skill level and careful attention to detail for a secure and functional build.

This guide, based on expert instruction from Brownells, details essential practices for proper ammunition storage. It emphasizes using airtight containers, managing humidity with desiccants, and maintaining stable temperatures to ensure ammunition reliability and safety. Proper storage is crucial for preventing corrosion and propellant degradation, especially for sensitive components like primers.

This guide details the process of upgrading an AR-15 from standard A2 furniture to Magpul components. It covers the removal of the A2 pistol grip and installation of the Magpul MIAD Grip and Magpul PRS Stock. The video demonstrates efficient assembly using specialized tools, highlighting the ergonomic benefits and adjustability of the Magpul parts. Instruction is provided by Brownells, a recognized industry authority.

This entry details the creation of a movie prop suppressor for a Remington 11-87 used in 'No Country for Old Men.' Prop master Larry Zanoff explains how the suppressor was designed to look homemade and was non-functional, with sound effects added in post-production. The process highlights the creative problem-solving involved in film armory.