ASG B&T MP9 Downgrade Bolt

The popular B&T MP9, GBB submachine gun is a powerful CQB airsoft gun, and in some CQB ranges, it might be to powerful

This drop-in replacement part will reduce velocity with 15-22 m/s (50-70fps) putting the MP9 well below the maximum limits on airsoft ranges everywhere.

The Low-power bolt assembly contains valve, piston and cylinder.

Installation requires experience in disassembling the MP9, and should be carried out by a skilled technician.