LMT MARS-H 308 / 6.5 creedmoor (SR-25 has competition!)

This guide details the quick-change barrel system on the LMT Mars-H, as demonstrated by Micah Mayfield. It covers the process of removing and re-installing a barrel to test zero retention, a critical feature for Designated Marksman Rifles (DMRs). The LMT Mars-H utilizes a monolithic upper receiver and a specific tool for barrel swaps, allowing for caliber changes between .308 Winchester and 6.5 Creedmoor.

This video provides a comprehensive guide to building a 16-inch LMT MARS-H rifle chambered in .308 Winchester, configured as a Designated Marksman Rifle (DMR). The build process covers lower receiver assembly, buffer system configuration specific to the MARS-H, upper receiver and barrel installation, muzzle device and suppressor mounting, and accessory integration. The instructor, Caleb from Brownells, details the parts and techniques required, emphasizing specific component choices and their rationale.

Daniel Defense's DELTA 5 bolt-action rifle allows for user-level barrel swaps, a process detailed by Daniel McLeroy, Product Design Lead. This guide outlines the installation, emphasizing the importance of proper torque and the factory-set headspace. The video highlights the benefits of Daniel Defense's cold hammer forging process and the 'HP Palma' contour for balancing accuracy and weight.

This guide details the setup and operation of the Hornady Versa-Prime adjustable bench priming tool. It covers unboxing, assembly, mounting, switching between small and large primers, and adjusting primer seating depth. The tool is praised for its robust construction, ergonomic design, and adjustable depth stop, though it requires specific Hornady shell holders. The review highlights its efficiency and consistency for reloading enthusiasts.

This video provides a comprehensive field strip and reassembly guide for the Robinson Armament XCR-M rifle. The presenter demonstrates how to disassemble and reassemble the large-frame, multi-caliber rifle, emphasizing its importance for cleaning and maintenance. The video highlights the XCR's quick-change barrel system, its availability in various calibers (.308, .243 Win, .260 Rem, 6.5 Creedmoor), and its ergonomic advantages over the FN Scar 17. It also discusses Canadian firearm regulations regarding barrel length and licensing requirements (PAL/RPAL).

This guide details how to address common malfunctions when running a .308 AR-10 with a suppressor, as demonstrated by PoorBoy Arms. The video highlights the need to adjust the gas block due to increased backpressure from the suppressor, which can cause double feeds and stovepipes. Proper tuning is essential for reliable suppressed operation.

This guide details the proper technique for safely loading the M1 Garand, specifically addressing the common 'Garand Thumb' phenomenon. It emphasizes maintaining downward pressure on the en-bloc clip during loading to prevent the bolt from slamming forward prematurely. Expert instruction from Garand Thumb highlights this as a key safety measure for new shooters.

This comprehensive review of the Russian Altyn helmet, presented by Garand Thumb, details its construction and ballistic performance. The helmet features a 3mm titanium shell with an aramid liner, rated for pistol and fragmentation threats. Testing reveals it stops 9mm and .44 Magnum rounds but fails against rifle calibers like 5.56x45mm and 7.62x39mm. Despite its robust construction for its intended role, its significant weight and lack of rifle protection are noted as drawbacks compared to modern alternatives.

Garand Thumb, a recognized subject matter expert in tactical equipment, critically assesses the effectiveness of ballistic face masks. The video details rigorous testing using realistic ballistic dummies and various firearms, from handguns to rifles, to measure projectile stopping power and backface deformation. The conclusion highlights significant risks associated with these masks, primarily due to severe deformation, suggesting they are often 'gimmicky' and less effective than traditional head protection.

This guide details the correct technique for loading the M1 Garand rifle, specifically addressing how to avoid 'Garand Thumb.' It emphasizes the 'bladed hand' method, a crucial technique for safe and efficient loading demonstrated by the speaker. Proper execution involves a swift, decisive motion to seat the en-bloc clip while protecting the thumb from the forward-moving bolt.