Ares Amoeba AS-Series 'STRIKER' CSPB-002 Bolt Upgrade Set

Product code: CPSB-002 611606
  • 450+fps
  • Drop In Upgrade
  • Full Steel Construction

Designed specifically for the AMOEBA Striker, this is a complete replacement bolt set, manufacutred from high quality stainless steel. Ready to simply drop-in as a replacement, this set contains everything you need to replace the bolt set. 

Full description


Get your trigger fingers ready for the long awaiting replacement Upgrade bolt. Full steel construction this is a drop in bolt that should increase your FPS to 450fps+ depending on the rest of your setup and lube used. The exterior of this bolt is produced to a far superior quality standard over a stock bolt too. Expect a smoother and more stable bolt pull shot after shot with this upgrade. The internals of the bolt include a steel spring guide that is bearing braced to keep your shots consistent too. The piston is also steel and when all combined, you are going to have a demon of a rifle out on the field. The internal spring is still AEG compatible too, so if you want to boost the power just a bit more, you can with a simple AEG spring.

Product Features:

  • Full steel cylinder and cylinder head
  • Full steel spring guide
  • Aluminium piston with steel cap (holds the spring strain on your sears)
  • Polished cylinder 
  • Improved smooth bolt pull
  • Increase your rifles FPS
  • Stepped cylinder head to improve the air seal against your hop rubber
  • Still takes AEG springs
  • Bearing braced spring guide to improve shot consistency
  • Bolt handle shaft is retained with 4 pins that are perfectly flush with the cylinder for a smooth pull
  • 3 slot ventilation to produce as much air volume as possible for such a short bolt pull 

Package Includes:

  • Ares - AMOEBA Striker Upgrade C.P.S.B Bolt Set
  • Ares - AMOEBA Striker C.P.S.B Stainless Steel Spring Guide
  • Ares - AMOEBA Striker C.P.S.B Stainless Piston



Internal Part Type


Colour Wheel Greyscale
Item Colour
Gun Metal Grey
Construction Icon
Fully manufactured from stainless steel

Part Specific

Part for Power Source Type
Weapon Platform
Package Includes
  • Spring Guide
  • Piston

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.