Videos tagged with Firearm Operating Systems

This review compares four primary operating systems for Pistol Caliber Carbines (PCCs) and Submachine Guns (SMGs): radial-delayed, straight blowback, roller-delayed, and gas-operated. Each system's pros and cons are detailed, with specific examples like the CMMG Banshee (radial-delayed), B&T SPC (blowback with hydraulic buffer), HK SP5/Stribog (roller-delayed), and Sig MPX (gas-operated). The host ultimately favors the B&T SPC for its balance of reliability and smooth shooting.

This YouTube video provides a technical comparison of CMMG's Patented Radial Delayed Blowback operating system against a Traditional (Straight) Blowback system. It aims to explain the mechanics and differences between these two firearm operating principles, highlighting the recoil impulse. The video also directs viewers to CMMG's website and social media channels for more information and encourages engagement through comments. It features footage from Dustin Ellermann for recoil comparison.

This video clarifies the Direct Gas Impingement (DGI) operating system, distinguishing it from the AR-15's system. It highlights the MAS 49/56 as a primary example of DGI, explaining how gas vents directly into the bolt carrier. The system's simplicity and lack of adjustability are noted, contrasting it with gas piston and blowback designs.

This review of the H&K MP7 A1 delves into its development as a Personal Defense Weapon (PDW) designed to counter body armor, contrasting its short-stroke gas piston system with the P90's blowback. The 4.6x30mm cartridge offers excellent penetration but lower terminal ballistics compared to larger calibers. Despite its compact size, the MP7 exhibits sharp recoil, though manageable in full-auto, and is highly effective when suppressed.

This expert guide from Forgotten Weapons delves into the mechanics of flapper-locking firearm systems. It details how flappers, attached to the bolt, engage with receiver recesses to lock the breech during firing. The explanation highlights the critical role of flapper size and engagement surface area in system safety and reliability, using examples like the DP-28 and contrasting them with the less successful G41.