Prometheus EG Barrel Wide Mechbox Pro Please be sure to loc

Please be sure to loc tite the screw to keep your safeties tight

Includes Micro Dot dust cover and batteries

20 gram BBs to launch at 300 FPS

The ATPRO design is based on the latest generation of Maxx hopups (M4A/M4P)

Prometheus EG Barrel Wide Mechbox Pro Please be sure to locInner diameter 6. 030. 01mm with dimensional tolerance! Wide Expanded HOP window for a variety of HOP nubs and tensioners Introducing Prometheus EG Barrel W; Wide Expanded HOP window model, based on our EG barrel with the renewed Wide Expanded HOP window for a variety of HOP nubs and tensioners. Inner barrel bore width of 6. 03mm with a tolerance of 0. 01mm, made of stainless steel (SUS) for superior strength necessary to maintain accuracy without the