Videos tagged with Radially-Delayed Blowback

The CMMG Dissent in 5.7x28mm offers a compact, bufferless PDW platform with a reversible side-charging handle. Its 6.5-inch barrel and dual recoil springs contribute to exceptionally low recoil, enabling rapid follow-up shots. Featuring CMMG's Zeroed accessories and a TriggerTech two-stage trigger, it presents a compelling option for a lightweight, high-capacity truck or backpack gun.

This video from SHOT Show 2020 highlights CMMG's innovative AR-15 conversion systems. CMMG offers a 5.7x28mm upper that transforms any standard AR-15 lower into a 5.7 firearm, utilizing a proprietary 40-round magazine and their signature radially delayed blowback system. They also present a 9mm conversion that works with standard AR-15 magwells, compatible with P-Mags. CMMG emphasizes specialized design for optimal performance across calibers.

This guide details the significant parts compatibility challenges inherent in building 9mm AR-15 platforms, contrasting them with the standardization of 5.56 AR-15s. It highlights issues with bolt geometry, trigger compatibility, proprietary systems, and magazine feed angles. The video emphasizes the need for thorough research and potential manual fitting due to the lack of universal specifications in the 9mm AR market, advising builders to expect 'teething pains'.

The CMMG MK57 Guard in 5.7x28mm offers a unique AR-15 platform experience, leveraging FN Five-seveN magazines and CMMG's effective Radially Delayed Blowback system. It excels with suppression, demonstrating significantly reduced noise levels. The firearm proved accurate out to 300 yards despite minor scope mount issues, making it a compelling option for pistol caliber carbine enthusiasts.

The CMMG Banshee in 9mm offers a compact and quiet shooting experience, especially when suppressed with the DefCan 9. Its radially delayed blowback system provides smoother operation compared to standard blowback firearms. The Banshee demonstrates impressive accuracy and manageable recoil, making it suitable for self-defense and range use.

The CMMG Guard 9mm PCC utilizes a unique Radially Delayed Blowback system for reduced recoil, making it exceptionally hearing-safe when suppressed. While featuring AR-15 compatibility and Glock magazine support with a last-round bolt hold-open, users should be aware of potential feeding issues with specific ammunition and the need for adapters due to its 1/2x36 barrel threading. The inclusion of an action tuning kit allows for optimization with different ammo types.