The CS3 Pro is built for pure performance and now leveled up with our exclusive HK Army Shredder milling. Powered by the OP Drivetrain, it runs at ultra-low pressure for unmatched consistency, efficiency, and reliability...no tuning needed. A redesigned foregrip with concealed breech sensors creates a sleeker stance while keeping paint and debris out of your electronics. The OLED screen adds NXL Pro presets for fast checks, and the adjustable Deuce trigger delivers pro-level speed with a Blade trigger included for preference. Finished with the upgraded S63 Pro 3-Piece Barrel System featuring the HK Army Elite Fossil back, this is the CS3 Pro—refined, streamlined, and built to win. Features HK Army Custom Shredder Milling on body and back cap HK Army Fossil Milled Shaft S63 Barrel Back with 3 PWR Inserts (.689, .685, and .681 insert) Frame With Extended Reach and revised Grip Geometry Proven OP Drivetrain with ultra-low 95–105 PSI operating pressure Cure FT Bolt with 3-stage acceleration for efficiency & shot consistency Redesigned foregrip and body-to-frame interface for cleaner stance & protection against paint ingress Reduced Recoil and Reduced Sound Signature 5 Point Adjustable Blade Trigger W/ Rake Control Simplified OLED display with NXL Pro preset and clutter-free run screen MME Electronics Package W/ BLE Bluetooth and OLED Rear Mounted Display Concealed breech sensors with no exposed eye covers Hoseless Air Transfer System Low Profile Feed Neck With Locking Sprocket Wheel Lock N' Load Battery Holder W/ 2 X AA Battery Operation Fully Mech Compatible – Mech Frame Sold Separately Hard Zipper Case W/ Comprehensive Parts Kit and Allen Wrench Set