How to Thread an AR-15 Rear Takedown Pin Detent Hole

This video details a troubleshooting process for an AR-15 experiencing a stuck bolt carrier group. The issue was ultimately identified as an incorrectly sized buffer tube detent that was too long, causing it to catch. The presenter demonstrates the process of identifying the problem, swapping parts, and testing functionality, emphasizing the importance of correct component fit for reliable operation.

This guide details how to address a seized AR-15 upper receiver, a common issue exacerbated by suppressor use and infrequent cleaning. The instructor, with extensive firearms experience, demonstrates a multi-stage approach starting with penetrating oils and progressing to more aggressive chemical cleaners when initial methods fail. The video emphasizes understanding dwell time and the effects of carbon buildup, offering practical solutions for a problem that can render a firearm inoperable.

This guide details the installation of an aftermarket AR-15 trigger, specifically a Timney Triggers product, into a clear lower receiver. The process involves unboxing, component inspection, mounting the trigger assembly with pins, and performing a function check. The demonstrative tone and clear handling of components suggest an experienced instructor guiding the viewer through a common firearm modification.

This video provides a comprehensive, step-by-step guide to building an AR-15 from kits. It covers the assembly of both the upper and lower receivers, detailing the installation of critical components like the barrel nut, gas block, trigger, and buffer tube. The guide emphasizes the use of specialized tools and proper techniques to ensure a successful build, concluding with a range test to confirm functionality.

This guide details the installation of the LaRue MBT-2S trigger for AR-platform rifles, based on insights from Concrete Cowboy. The video highlights the trigger's origin story, its 4-4.5 pound pull weight with a solid wall and clean break, and the speaker's positive long-term experience. It emphasizes the value proposition of a premium feel at a reduced cost.

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 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.