Mitsubishi Mailbag: Customer question on gas block “upgrade".

This guide details how to fix AR-15 gas issues by replacing the gas tube with one featuring a specific port size, such as the 0.070-inch option from Black River Tactical. This method aims to regulate gas flow, correcting ejection patterns without needing an adjustable gas block. The process involves disassembling the upper receiver, swapping the gas tube, and reassembling, with a focus on achieving a 3:30-4:00 o'clock ejection pattern for optimal performance.

This guide details common failure points and maintenance schedules for the AR-15 platform, drawing from practical experience. It covers wear on critical components like the bolt, extractor, gas rings, firing pin, barrel, and gas system, providing estimated lifespans for each. The information emphasizes the importance of regular cleaning, lubrication, and inspection, especially when using accessories like suppressors that can increase fouling. It also touches on the durability differences between aluminum and steel gas blocks and the potential weaknesses of early polymer lower receivers.

This video highlights a small but significant improvement from SOLGW (Sons of Liberty Gun Works) – a new grip screw for their AR-15 platform. The screw features a combo head compatible with both 3/16" hex drivers and flathead drivers, is constructed from durable 4140 Steel, and finished with a Black Oxide coating for corrosion resistance. SOLGW emphasizes their commitment to continuous fine-tuning and readily available parts, stating this screw will be included in all their firearms, lower parts kits, and offered to OEM partners. The focus is on enhancing an already functional platform with quality components.

This video from SOLGW discusses the necessity and method of pinning gas blocks, specifically highlighting it as 'insurance' for fighting rifles that will undergo heavy usage. The presenter explains their technique for pinning gas blocks in addition to the standard barrel dimpling process, emphasizing its importance for reliability in demanding situations. The content focuses on a specific gunsmithing practice aimed at enhancing the durability and performance of an AR-15 platform rifle.

This guide from The VSO Gun Channel provides expert advice on selecting and avoiding specific types of AR-15 gas blocks. It highlights the superior reliability of cross-pin front sight tower gas blocks and integrated monoblock barrels, while cautioning against clamping gas blocks and those made from aluminum. The video also details considerations for low-profile and adjustable gas blocks, emphasizing the importance of secure attachment methods and material choice for long-term performance.

This video introduces the new Bullet Proof® Adjustable Lo-Profile AR-15 Gas System from Wilson Combat, presented by Paul Levy of Brownells. The system features a low-profile gas block made of 4140 steel with an integrated stainless steel gas tube. Its key feature is a slot-head screw allowing adjustment of gas flow through 16 positive-click settings, enabling users to optimize for different ammunition. The self-cleaning mechanism scrapes out carbon fouling with each adjustment. Setscrews secure the block to pre-dimpled barrels, and the straight gas tube simplifies installation. The system is available with various gas tube lengths and for different barrel diameters.

This guide details the installation and key features of the Sons of Liberty Gun Works MK 1 handguard, emphasizing the rigid Drive Lock system for laser zero and seamless receiver-to-rail continuity. It highlights cable management channels and the flat bottom for barricade stability. The information is presented with technical detail, reflecting the expertise of the manufacturing company's representative.

This video provides an expert overview of the Sons of Liberty Gun Works (SOLGW) OB 1 rifle, a collaborative project with Christian Craighead. Drawing on Craighead's 28 years of military experience, including Tier 1 Special Operations and lead instructor roles, the OB 1 is designed as a versatile 'do-it-all' rifle. Key features include a 13.7-inch barrel with a pinned Huxwrx muzzle device for 16-inch legal length, Magpul furniture, and a distinctive Rhodesian Brushstroke camouflage finish.

This guide details the process of dimpling an AR-15 barrel for proper gas block alignment, a critical step often overlooked. Instruction from Sons of Liberty Gun Works emphasizes using specialized jigs and tools to ensure correct placement, preventing malfunctions. Proper installation with Loctite 271 Red and knurled set screws guarantees a secure gas block, vital for reliable firearm operation.

This video provides an in-depth look at the Sons of Liberty Gun Works (SOLGW) MK1, detailing its advanced mechanics and materials. The presentation, delivered with high authority by a SOLGW representative, covers unique features like its specialized rail with dual indexing dowels, aggressive laser stippling, and a port door rod access point. It also delves into material science, discussing barrel options including ARMAD steel, titanium barrel nuts with aerospace coatings for heat dissipation, and enhanced bolt catch mechanisms. The MK1 is highlighted for its extreme reliability testing and design philosophy prioritizing function in adverse conditions over commercial trends.