Roller-Delayed Blowback 9mm

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Yes, a Roller-Delayed Blowback 9mm Is Better. Here’s Why

August 19, 2025
Roller-Delayed Blowback 9mm

Those of you who landed here looking for a viable platform (or parts) for a pistol-caliber carbine or an SMG like an MP5 may be familiar with a roller delayed blowback system, which has serious advantages over both direct blowback and recoil-operated systems. In fact, roller delayed blowback actions have advantages over gas impingement too. […]