A Lower for the Lima Six Belt Fed Upper

This video focuses on AR-15 lower parts kits, guiding viewers on how to select the right one for their build. It highlights the importance of understanding the differences between kits to ensure a successful firearm assembly. The description also encourages viewers to sign up for CMMG Insider updates and provides links to CMMG's website and social media channels for more information on releases and company news.

This guide, presented by School of the American Rifle, details how to identify and replace a malformed weld spring in an AR-15 Delta Ring assembly. A misaligned weld spring can cause the gas tube to be pushed off-center, leading to excessive friction or damage to the carrier key and gas tube. Replacing the faulty component ensures proper gas tube alignment and firearm reliability.

This YouTube Shorts video likely showcases the creation or modification of an AR-platform firearm magazine, potentially referred to as the "ARQUAD MAG." The title suggests a focus on a specific type of magazine, and the inclusion of hashtags like #shorts indicates a short-form, engaging format. The description points to a "gear" link, implying the video might be part of a broader content strategy related to firearms and everyday carry (EDC) items.

This YouTube video focuses on a "300 Blackout Borderlands Build," suggesting a custom firearm project inspired by the popular video game series. The title indicates a specific caliber, 300 Blackout, and a potential emphasis on customization or a unique aesthetic. The content likely involves assembling or showcasing a firearm with characteristics that evoke the Borderlands universe, potentially including unique paint schemes, modifications, or accessories.

This video offers a shop tour at SOF Defense, focusing on their AK build operations as part of the "Building AKs pays the bills" theme. It also promotes the Kalash Bash Texas 2026 event with a registration link. Additionally, viewers are encouraged to support the channel by purchasing merchandise, with links to their apparel store and Instagram provided. The music for the video is credited to Karl Casey @ White Bat Audio.

This video focuses on building an AR-15 lower receiver, featuring the Rise Armament RA-100 trigger and Rise LPK (Lower Parts Kit). The build incorporates an Armaspec captured buffer, an Anderson lower receiver, and B5 furniture. The description includes a discount code for Rise Armament products, indicating a potential product showcase or sponsored content.

The Ounce Pistol is demonstrated for its rapid-fire capabilities on steel targets. The video details its unique loading procedure via a side door for its 10+1 capacity .22 LR internal magazine and its folding mechanism for concealment and deployment. Expert handling showcases the firearm's specific mechanical nuances.

Hoffman Tactical introduces the 'Super Safety,' an innovative active trigger reset system for the AR-15 platform. This push-button system replaces the standard safety selector and offers a unique 'Active Reset' mode that mechanically resets the trigger during bolt cycling, significantly reducing split times. The system is open-source and 3D-printable, with recommendations for specific materials like Polymaker PA12-CF for durability.

This video details the process of 3D printing firearm components, specifically AR-15 lowers, using carbon fiber nylon. It covers essential filament preparation, necessary printer hardware upgrades like all-metal hot ends and hardened nozzles, and critical print settings including specific temperatures for the nozzle and bed. Advanced slicing techniques and post-processing steps are also discussed to ensure successful and durable prints.

The Altor pistol is a unique semi-automatic, long-stroke recoil-operated firearm chambered in .22 Long Rifle, distinguishing itself from typical blowback-operated .22 caliber handguns. It features a 10-round fixed magazine located on top of the receiver, making its internal mechanics particularly fascinating for firearm enthusiasts.