Maxx Model CNC Aluminum Hopup Chamber M4P Pro (with BB Latching System) unit is precisely machined to perform accurately and consistently with HPA PolarStar Engines on standard M4/M16 platform

Diameter: 32mm

Aluminum Buffer Tube for M4 / M16 AEGs (Black)

At the top of the receiver is a tactical rail

Professionally designed front and rear sights provides quick access when zeroing in your enemies

Prometheus 6.03 EG Tight Bore Inner Barrel [229mm] SRC Maxx Model CNC Aluminum HopupPrometheus 6. 03 EG Tight Bore Inner Barrel 229mm Inner barrel bore width of 6. 03mm with a tolerance of 0. 01mm, made of stainless steel for superior strength necessary to maintain accuracy without the need for coatings. The barrel is arguably the heart of any airsoft gun and determines various performance factors such as velocity (FPS), accuracy, and precision (consistency). Real steel guns have a single metal barrel while airsoft gun barrels come