How to Install AR-15 Free Float Tubes Presented by Larry Potterfield of MidwayUSA

This expert guide from School of the American Rifle details how to identify and replace a malformed weld spring in an AR-15's delta ring assembly. A misaligned weld spring can cause gas tube issues, leading to potential component damage. The video provides a clear visual comparison and step-by-step instructions for replacement, emphasizing proper alignment for optimal function.

This guide details common failure points and maintenance schedules for the AR-15 platform, drawing from practical experience. It covers wear on critical components like the bolt, extractor, gas rings, firing pin, barrel, and gas system, providing estimated lifespans for each. The information emphasizes the importance of regular cleaning, lubrication, and inspection, especially when using accessories like suppressors that can increase fouling. It also touches on the durability differences between aluminum and steel gas blocks and the potential weaknesses of early polymer lower receivers.

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 how to thread the rear takedown pin detent hole on an AR-15 lower receiver using a 4x40 tap and a set screw. This modification allows for easier removal of components like the end plate and buffer tube without losing the rear takedown pin spring and detent. The process involves careful tapping with cutting oil and a specific technique of rotating and backing out the tap to create clean threads. It also covers trimming the takedown pin spring to accommodate the set screw.

This guide details how to fix AR-15 gas issues by replacing the gas tube with one featuring a specific port size, such as the 0.070-inch option from Black River Tactical. This method aims to regulate gas flow, correcting ejection patterns without needing an adjustable gas block. The process involves disassembling the upper receiver, swapping the gas tube, and reassembling, with a focus on achieving a 3:30-4:00 o'clock ejection pattern for optimal performance.

This expert guide from the School of the American Rifle details how to identify and address rough carrier key bores in AR-15 bolt carrier groups. The instructor, demonstrating expert knowledge, explains how these manufacturing defects, particularly on Colt components, can lead to premature wear on the gas tube and reduced reliability. Solutions involve replacing the defective carrier key to ensure smooth operation and longevity of the firearm.

This guide details a high-speed Cowboy Action Shooting stage, demonstrating expert transitions between a lever-action rifle, dual single-action revolvers, and a side-by-side shotgun. It highlights efficient manual shotgun reloading techniques from a belt carrier, showcasing advanced proficiency in competitive shooting disciplines. The video emphasizes speed and accuracy across multiple firearm types.

This video provides an expert-level demonstration of the Mosin-Nagant M91/30 PU Sniper rifle. It covers visual inspection, the proper loading procedure for 7.62x54R ammunition, and live fire at an outdoor range, showcasing bolt manipulation and recoil control. The demonstration is presented in a silent, ASMR-style format by an authoritative demonstrator.

This guide details the complex process of reboring a Winchester 1885 Low Wall rifle from .32 Rimfire to .357 Magnum, addressing a pitted bore. Expert gunsmith Larry Potterfield demonstrates disassembly, barrel removal, specialized reboring at Delta Gun Shop, chambering, crowning, action conversion, and final marking/finishing. The process highlights advanced machining techniques and specialized tools required for such a conversion.

This guide details the cycle of operation for the Winchester Model 12 shotgun, as explained by Larry Potterfield of MidwayUSA using a cutaway model. It covers loading, safety engagement, firing, extraction, and chambering. The explanation highlights the hammerless pump-action design and internal component interactions, offering valuable insights for gunsmithing and understanding firearm mechanics.