Criterion Barrels: 12.5" Barreled Upper Receiver

This guide details the installation and tuning of a Global Ordinance monolithic upper receiver for an AR-15. It highlights the benefits of a monolithic barrel design and the necessity of an adjustable bolt carrier group for proper gas regulation, especially when using a suppressor. The process involves attaching the upper, installing the BCG, mounting a suppressor, and then fine-tuning the gas system for optimal performance in both suppressed and unsuppressed firing conditions.

This guide, based on expert instruction, details 17 habits to ensure firearms like Glocks and AR-15s last over 20,000 rounds. It emphasizes proactive maintenance, including meticulous round count logging, regular cleaning and lubrication, timely replacement of critical springs and components, and thorough visual inspections. Following these practices prevents malfunctions and extends the operational life of your firearm.

This guide details the assembly and testing of a custom 14.5-inch SPR build, featuring a Proof Research carbon fiber barrel and Nightforce optic, as presented by Lucas Botkin. It emphasizes the importance of monitoring barrel deflection and distinguishing equipment performance from environmental factors during competitive shooting events. The build is geared towards advanced users participating in sniper matches.

This guide details how to adjust a Riflespeed Gas Control for optimal performance on AR-15 and AR-10 platforms, particularly addressing reliability issues in varying environmental conditions. The VSO Gun Channel Host, demonstrating high technical authority, walks through systematic testing in both warm (94°F) and cold (17°F) weather, highlighting the need to adjust gas settings for consistent cycling and ejection. The process emphasizes tool-less adjustments and the use of an online configuration tool for selecting the correct gas block length.

This guide details the construction of two essential AR-15 configurations: a compact 11.5-inch 'SHTF' build and a versatile 16-inch 'Recce' build, both chambered in 5.56 NATO. The video emphasizes component selection, the importance of barrel length for performance, and the value of chronograph data for verifying ballistics. It also advises new shooters to buy complete rifles while encouraging experienced builders to focus on tolerance stacking for personalized performance. The instruction comes from an expert with high technical proficiency in AR-15 platforms.

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 entry synthesizes expert insights from Ivan of Kit Badger, a contractor with six years of experience. It details the financial incentives, lifestyle benefits, and mental health support available in security contracting, while also cautioning against common pitfalls like lifestyle creep and the impact on family life. A strong emphasis is placed on having a clear exit strategy from the outset.

This guide details the customization of a Ruger American .308 rifle, transforming it into a more capable precision tool. The process involves upgrading the stock to a Magpul Hunter, installing a higher-magnification Bushnell optic, and professionally shortening and threading the barrel for suppressor use. Expert insights from the video highlight that even with a 16.5-inch barrel, the rifle can maintain 1-1.5 MOA accuracy with quality match ammunition, making it a versatile option for hunting or utility.

This guide outlines how to get started in security contracting, drawing insights from former Marine Corps infantry and security contractor Ivan of Kit Badger. It emphasizes the importance of understanding contract types, the necessity of military or specialized law enforcement experience, and the rigorous vetting processes involved. Networking is highlighted as the most effective way to secure employment in this field, with a strong recommendation to obtain a TS/SCI clearance for high-paying opportunities.

This guide details a professional pistol painting technique demonstrated by Ivan from Kit Badger. It covers essential preparation, including thorough masking and degreasing, followed by a multi-layer application process using spray paints and stencils for a durable camouflage finish. The technique aims to enhance personalization and provide scratch and corrosion resistance.