CYMA HOP-Up Chamber with Rubber and Nub for SMG-5 AEG

Code: FBP4151
  • Replacement original parts
  • Includes HOP-up chamber, bucking and nub
  • For CYMA CM.027 SMG-5 series

If you have HOP-up woes with your SMG-5 this could be what you need to fix it up! The CYMA HOP-Up Chamber with Rubber and Nub for SMG-5 AEG is a replacement original part for the CM.027 SMG-5 series but should also work in any TM based SMG-5 AEG (not NGRS variants). The set includes a complete HOP-up unit with the HOP-up arm and also includes a basic HOP-up rubber and nub, giving you everything you need to replace the entire unit in a single package. 

This set is designed for the CM.027 which is a copy of the Tokyo Marui SMG-5 AEG and should also work with similar designs but is not compatible with the Classic Army SMG-5 or the later CYMA CM.041 series SMG-5 AEGs. 

Full description



  • Replacement original parts
  • The set includes a complete HOP-up chamber, bucking and nub
  • Polymer HOP-up chamber, rubber HOP-up bucking and nub
  • Compatible with CYMA CM.027 SMG-5 AEG and other Tokyo Marui clones (JG etc.)
  • Not compatible with Classic Army, G&G or CYMA CM.041 series SMG-5 AEGs

Package Includes

  • CYMA HOP-Up Chamber with Rubber and Nub for SMG-5 AEG



Internal Part Type
Hop-Up Rubber, Hop-Up Unit, Hop-Up & Parts, Hop-Up Nub,
Patrol Base - Warning Icon
Patrol Base - Warning Icon
Parts Fitting


Colour Wheel Greyscale
Item Colour
Construction Icon
Polymer HOP-Up chamber with rubber bucking and nub
Internal Part Construction
Polymer, Rubber,

Part Specific

Part for Power Source Type
Weapon Platform
  • Submachine Gun
  • SMG-5
Package Includes
  • Hop Rubber
  • Hop Nub
  • Hop Unit

Electric Part Specific

Gearbox Icon
Gearbox Version
V2 Gearbox
Gearbox Version Compatibility Variant
Version 2

Size guide

Parts Fitting

Upgrades and Downgrades should only be undertaken by experienced players, or Airsoft Technicians. Please note, changing any internal parts of a weapon voids its warranty unless done in-house by our staff. 

Please ensure that when fitting parts the part purchased is the correct part, as once a part has been fitted we cannot accept return.

We do know that players love to tinker, so we're here to give you help should you require it, and if needed you can get in touch with our workshop for more help!

Unique Parts

Please note that some parts may be unique to a specific brand of weapon. For example: Parts for an ASG M4A1 may not fit an ICS M4A1.

Parts from the same brand typically have a high chance of fitting, though be warned, some replicas use unique parts, so please ensure the part will fit before you attempt to fit it.

If you require help with fitting any parts feel free to get in touch with us via our Contact Us Page.