Videos tagged with Direct Gas Impingement

This guide clarifies the operational mechanics of the AR-15/M16 gas system, distinguishing it from true Direct Impingement (DI) systems. Drawing on Eugene Stoner's patents and visual evidence of components like the bolt carrier group, it explains the AR-15's internal piston design. The information is presented with high authority, referencing historical firearms and patent details.

This entry details the Direct Gas Impingement operating system of the AR-15/M16, identified as America's longest-serving service rifle. It explains how propellant gases cycle the action and notes the potential for carbon buildup, a characteristic sometimes criticized. The information is presented with an authoritative tone, drawing from an established firearms personality.

This video details a 10,000-round torture test of a Bravo Company USA (BCM) AR-15, conducted by Tim from Military Arms Channel and presented by Mrgunsngear. The test aimed to demonstrate the robustness of the Direct Gas Impingement (DI) system, showing that significant carbon buildup can occur without maintenance, leading to malfunctions. Despite the fouling, the rifle maintained accuracy at 200 yards, highlighting the inherent reliability of well-built DI AR-15s, though the presenter strongly advises against neglecting regular cleaning and maintenance for duty firearms.

This video details a 10,000-round endurance test on a BCM AR-15 rifle, conducted over five years with zero cleaning or lubrication. Expert insights from Paul Buffoni of BCM explain how carbon buildup affects Direct Gas Impingement systems. The test demonstrates the rifle's resilience and the critical role of lubrication for sustained performance, even after extreme abuse.

This video introduces three new AR-15 platforms for 2025, highlighting their features and intended uses. The Bushmaster VR Radicator is presented as a hunting rifle with multiple barrel lengths and chambered in .223 Wylde. The POF USA LMR Base and P-15 Base are described as modernized AR-15s with proprietary features like the E2 dual extraction chamber and roller cam pin, targeting different price points. Finally, the Heckler & Koch MR A4 series is showcased as an evolution of the HK416, featuring a short-stroke gas piston system and enhanced ergonomics.

This video reviews the CMMG Dissent rifle, highlighting its direct gas impingement system and AR-180 inspired design. The presenter compares it to the Sig Spear, emphasizing the Dissent's modularity, availability in various calibers (including 8.6 Blackout and .308), and a more accessible price point. The review covers field stripping, internal comparisons, and shooting impressions, noting its compact action and pleasant shooting characteristics.

This video explains the Direct Gas Impingement (DI) operating system, differentiating it from other systems like gas piston and blowback. It highlights the MAS 49/56 rifle as a primary example of true DI, detailing how gas is tapped from the barrel and directed via a tube to the bolt carrier. The explanation emphasizes the system's unique mechanics and corrects common misconceptions about its application, particularly concerning the AR-15 platform.

This expert review from Military Arms Channel analyzes five 7.62x39mm rifles that deviate from the standard AK platform. Instructor Tim provides an in-depth look at the Arsenal SAM7SF, PTR 32, SIG Spear, CMMG Dissent Mk47, and IWI Galil ACE, detailing their unique operating systems, ergonomics, and performance. The analysis highlights the strengths and weaknesses of each platform, offering valuable insights for firearm enthusiasts seeking alternatives to traditional AKs.

This video identifies a firearm as the Rasheed carbine, an Egyptian Cold War rifle chambered in 7.62x39mm. It highlights key differences from the SKS, such as its direct gas impingement operating system and non-reciprocating charging handle. The Rasheed's lineage is traced from the Hakim rifle, which itself was derived from the Mauser Gewehr 1898.

This video provides an expert-level comparison of the rare Iraqi Baghdad Carbine and its Egyptian Rasheed predecessor, presented by Ian McCollum of Forgotten Weapons. The analysis highlights subtle yet significant differences, particularly in receiver markings and the inclusion of a buttstock cleaning kit on the Baghdad Carbine. Mechanically, the rifles are identical, sharing a direct gas impingement system, milled receiver, and 7.62x39mm caliber, with fully interchangeable parts. The video delves into the historical context of their production, including the transfer of tooling from Egypt to Iraq.

This guide details the field stripping process for the Egyptian Rasheed carbine, a semi-automatic rifle developed from the Swedish AG-42 Ljungman and Egyptian Hakim. The process involves safely unloading the firearm, removing the magazine, dust cover, bolt carrier group, recoil spring, and gas system. Expert instruction from Ian McCollum of Forgotten Weapons highlights the mechanical similarities to other historical firearms.

This guide details the field stripping process for the Colt Model 607, the precursor to the XM177 series. It highlights unique features such as the slab-side receiver, shortened grip, early collapsing stock, and the moderator muzzle device. Expert Ian McCollum provides a technical overview, emphasizing the historical significance and evolutionary steps leading to modern AR carbines.