The QA December 2019

This discussion from Regular Guy Training LLC delves into the practical applications and limitations of the 300 Blackout cartridge, particularly in civilian contexts. The panel of firearms instructors and enthusiasts argues that while 300 Blackout was designed for specific military roles, its civilian utility is questionable due to reliability issues, high cost, and a lack of distinct advantages over other calibers. They emphasize that a 'fighting rifle' must be reliable, accurate, and durable, qualities they find lacking in many 300 Blackout platforms when pushed to their limits. The conversation also explores the concept of a Personal Defense Weapon (PDW) and why 300 Blackout often falls short of meeting those requirements.

This guide provides expert-level preparation tips for gas gun precision rifle matches, drawing from an experienced shooter's routine. It covers essential steps like small base sizing brass, gas system tuning, positional drills, and data confirmation at extended ranges. The advice emphasizes building solid fundamentals and efficient execution for competitive success.

This guide details techniques for manipulating the safety selector on an MP5, highlighting ergonomic challenges and solutions. Lucas Botkin, demonstrating high authority, explains how the MP5's safety selector can be less ergonomic than an AR-15, often requiring a grip break. The video emphasizes specific techniques for effective safety manipulation, even with aftermarket enhancements like the Magpul safety selector.

This guide, presented by a Palmetto State Armory representative, demonstrates the audible and visual differences between supersonic and subsonic 300 Blackout ammunition when fired from a suppressed AR-15. It highlights that subsonic rounds eliminate the sonic crack, offering superior noise reduction for suppressed systems. The principles discussed are applicable to other calibers like 9mm.

This video challenges the notion that short-barreled AR-15s (specifically an 11.5-inch BCM) are inaccurate at distance. The instructor demonstrates grouping from various unsupported and supported positions at 140 meters, showing that acceptable combat accuracy is achievable. The content emphasizes practical application over theoretical limitations often cited by 'fuds'.

This video showcases the Mimic Speed9 Pistol Caliber Carbine (PCC) in a live-fire demonstration by Roger Barrera at SHOT Show 2026. The footage highlights the firearm's rapid-fire capabilities, flat shooting, and effectiveness with a suppressor. It also demonstrates efficient reload drills, emphasizing the platform's reliability under demanding conditions.

This video showcases a novel magnetic optic mount for pistols, demonstrating its quick attachment and detachment capabilities. The speaker tests its retention by racking the slide, highlighting its potential as a firearm innovation. While initially shown on a Glock, the mount is available for other platforms like Sig Sauer and HK.

This guide covers the basic operation and features of the EOTECH OGL, a compact laser aiming device. It highlights the interface controls, including the activation button and the illuminator adjustment lever, and explains the benefit of co-aligned visible and IR lasers for simplified zeroing. The use of VCSEL technology is also noted.

This entry details the innovative Full Conceal M1 system for the Sig P320 and a prototype Folding Glock 19, both designed for enhanced concealability. The M1 system, priced at $899, integrates an 18+1 capacity with a smartphone-like footprint and active retention. The Folding Glock 19 prototype showcases a unique mechanism for rapid deployment from a compact state, utilizing a 23-round 9mm magazine. Expert insights from Chris Tran (Guns & Tactics Magazine) and Mike (Full Conceal) highlight the technical aspects and practical applications of these designs.

This guide, drawing on expert instruction from UN12 Magazine, details the critical steps for properly installing and maintaining firearm sights. It emphasizes the use of witness marks on red dot sights to ensure screw security and highlights the importance of checking iron sights for mechanical integrity to prevent zero loss. Proper installation and regular checks are vital for all sighting systems.