Acetech BiFrost BT GAS Gearbox version: Version 3

Gearbox version: Version 3

Attaches to virtually any Weaver/Picatinny/MIL-STD 1913 type rails

and range compared to stock gun barrels

Integrated MOSFET protects wiring and is programmable to fire either 3-round burst or fully automatic

Acetech BiFrost BT GAS Gearbox version: Version 3DESCRIPTION: Bifrost BT features with tracer unit, 11 color flame mode, sniper mode, and built in chronograph to test BBs performances and now you can configure the flamer color in the APP with Bluetooth. Its an innovative design and advanced technology makes it the perfect accessory for airsoft players. Product Features: 1. Connect Bluetooth to phone: Use AceSoft App to detect the speed function LED flame function setting. 2. Flaming effect depends