The AR-15 Lower Finally Evolved | USMGM MG-15E Ambidextrous Lower

This video provides an in-depth look at the KAC DBC (Dead Blow Carrier) Bolt Carrier Group, highlighting its innovative design that incorporates a sliding weight to simulate heavier buffers. The presenter, a firearms instructor, demonstrates its compatibility with various AR-15 builds, particularly those with Force Reset Triggers (FRTs), and explains how it allows for the use of standard carbine buffers, reducing cost and complexity. The review emphasizes its effectiveness in mitigating bolt bounce and improving cycling reliability, especially in suppressed or over-gassed systems.

This guide details a practical drill for evaluating ambidextrous AR-15 lower receiver controls, as demonstrated by Clint Morgan. The test focuses on real-world usability by incorporating cold-weather gloves and a timed reload sequence. It highlights how different ambidextrous designs perform under stress, offering insights for shooters seeking optimal ergonomics.

This video introduces the Rare Breed 15C3 Two-Stage FRT trigger, a significant upgrade for AR-15 platforms. Instructor Chris from Regular Guy Training highlights its two-stage pull, which offers precision for semi-automatic fire and transitions seamlessly to rapid cycling. The review emphasizes the trigger's reliability, ease of installation, and its ability to enhance the performance of various AR-15 configurations, including compatibility with different uppers like the BRN4.

This guide details troubleshooting steps for the ATRIUS FR Selector, focusing on common issues that can affect its functionality. It emphasizes the importance of proper magazine condition, buffer weight selection (recommending H2 or H3), and the necessity of a Full Auto Bolt Carrier Group for reliable operation. Proper lubrication is also highlighted as crucial for smooth performance.

This video compares the installation time and feel of the Magpul B.A.D. Lever and the Phase 5 Ambi Bolt Catch. The Magpul B.A.D. Lever was faster to install (2 minutes 30 seconds) but had some minor wiggle. The Phase 5 took longer (4 minutes 56 seconds) but felt more solid and secure, with no screws to loosen over time. The presenter notes that using Lock Jaws can significantly speed up roll pin installation.

Hunter Constantine of UN12 Magazine demonstrates the installation of the Magpul DT PR stock and K2-XL grip on an LMT rifle chambered in 6.8 SPC. The video highlights the ergonomic benefits, particularly for prone shooting and achieving a better cheek weld with thermal optics. Constantine emphasizes how the wider K2-XL grip improves comfort and trigger press consistency, comparing it to competition pistol grips.

This guide details the installation of a Trijicon RCR red dot sight on a Glock 17 MOS pistol, emphasizing safety and precise torque specifications. The instruction, delivered with high authority, covers firearm clearing, slide disassembly, optic mounting with Loctite, and proper screw torquing using a Trijicon torque card. It highlights the importance of using the correct adapter plate for MOS systems and achieving the specified 13 inch-pounds of torque for secure mounting.

This guide details the expert installation of a Leupold DeltaPoint Pro red dot sight on a Glock 17 MOS pistol. It emphasizes critical steps like safety checks, proper use of thread locker, and precise torque specifications (13 inch-lbs for adapter plate, 25 inch-lbs for optic) using specific Torx bits. The instruction is delivered with an expert tone, highlighting the importance of following detailed procedures for a reliable optic mount.

This guide details the installation of the BCM Buffer System on an AR-15 platform. It covers the proper threading of the buffer tube, installation of the buffer retainer and spring, securing the end plate, and final insertion of the buffer and spring. The process emphasizes correct alignment and tension to ensure reliable function.

This guide details the technique for ghost loading a Beretta 1301 Tactical (Mod 1 or Mod 2) using the Pro Lifter, achieving a 7+2 capacity for a total of 9 rounds. The process involves specific manipulation of the charging handle and lifter mechanism to securely seat an additional round. This advanced loading technique is demonstrated by Gear And Guns, highlighting its utility in combat or tactical scenarios.