Lighter cycling. Faster performance. Precision engineered. The Dr. Black Aluminium Blowback Unit is a premium upgrade designed to improve the performance and reliability of your Hi-Capa gas blowback pistol. CNC machined from lightweight aluminium, it reduces reciprocating mass to promote faster slide cycling, quicker follow-up shots, and improved gas efficiency. Designed as a direct replacement for the factory blowback housing, this upgrade offers exceptional machining quality and a precise fit, making it an excellent choice for both high-performance speedsoft builds and custom competition pistols. The lightweight construction helps your slide cycle more efficiently while maintaining the strength required for demanding skirmish use. Whether you're chasing faster cycle times or completing a premium custom build, the Dr. Black Blowback Unit is an upgrade you'll appreciate. Key Features: CNC machined aluminium construction Lightweight design for faster slide cycling Improves gas efficiency and responsiveness Precision-engineered for excellent fitment Direct replacement for the factory blowback unit Durable anodised finish Compatible with Tokyo Marui-spec Hi-Capa platforms Ideal for Hi-Capa Builds A premium internal upgrade that enhances both performance and reliability. * You will need to pick up a pack of Cowcow O-rings to fit certain nozzles