Pheas Airsoft does an unboxing video of the budget friendly Delta Armory M4 SilentOps CQB Bravo ETU. The Delta Armory AR15 SilentOps CQB is a lightweight and durable airsoft gun ideal for close-quarters combat (CQB) games. It features a fully upgraded interior with CNC machined parts, a high-torque motor, and a precision barrel for improved performance.