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CNC Aluminum Hop-Up Chamber M4A Pro (with BB Latching System) unit is precisely machined to perform accurately and consistently on Tokyo Marui (i...

A full metal hop-up unit from Ultimate. Features an innovative o-ring that improves the seal between the front of the gearbox and the hop-up unit....

A replacement c-clip for most brands of hop-up unit. Made by Ultimate (Lonex). Blue in colour.

New improved design to work with more hop up rubbers and a wider range of BB weights! New arm in anodised in gold colour machined from 7075 alumi...

A full metal hop-up unit from Ultimate.The adjustment mechanism must be assembled by the user and offers a nice tight adjustment once fully assembl...

Perhaps the most complete hop-up system for the Marui MWS series, this set from Guns Modify comes with everything required to replace the stock ho...

CNC Aluminum Hopup Chamber EVO unit is precisely machined to perform accurately and consistently on the ASG 2018+ CZ Scorpion EVO-3 Airsoft Rifl...

This CNC Aluminum Hop up Chamber/Adjuster M4T set is precisely machined from a solid Aluminum block to perform accurately and consistently for To...

The Guns Modify competition hop up adjustment wheel is a premium upgrade part designed to help the user dial in their hop up more precisely giving...

Designed specifically for the ASG Scorpion EVO 3 A1,  upgrade your existing adjustment wheel for easier and more precise hop-up adjustments. Redes...

Prometheus ELITE CNC Hop Up Unit Standard hop, Flat hop, R-hop compatible. CNC construction. Includes 2 Prometheus buckings and nubs. Ball be...

A full metal hop-up unit from Ultimate. The adjustment mechanism must be assembled by the user and offers a nice tight adjustment once fully assem...

Designed specifically for the MAXX Hop-Up units. Fully locks on to the inner barrel and Hop-Up Chamber. Bright orange in colour. Elongated O-Ring...

An OEM rotary hop-up unit from Krytac for the Trident series of AEGs.

Designed especially for the Maxx Hop-up units to address the issue of axial displacement of the chamber caused by two factors. Firstly the outer b...

The ARA (Advanced R-Hop Arm) is specially designed to be a drop-in upgrade to mitigate the risk of modifying the original arm to give a perfect, e...

The Advanced locking ring is designed to replace the current O-ring (Normally brass) ring at the end of setting up the hop unit, however, with the...

This enhanced Hop-up set is made by precision CNC machines. The Air-tight Loading Nozzle is made of 304 Stainless Steel, and the Hop-up Chamber is...

Suitable for Krytac hop-up models. Perfect TDC top down centre force gets applied to the R-hop patch. No need for modifying the stock arm and addi...

This CNC Aluminum Hop up Chamber M4T One unit is precisely machined from a solid Aluminum block to perform accurately and consistently for Tokyo ...

Advanced Inner Barrel Locking Ring The Advanced locking ring is designed to replace the current O-ring (Normally brass) ring at the end of setti...

The TDC (Top Down Centre) Trolley is designed for the Maxx Hop-up chambers to incorporate the use of tensioner nubs specifically for Flat-hop buil...