Bolster Armouries AEG Power Enhancement Pack

Bolster Armouries
£16.99 Pack price
Normally £22.97
Save £5.98
  • Bolster Armouries AEG Spring - Choose your power
  • Prometheus Purple HOP-up bucking & Nub
  • Bolster Armouries HOP-up to Barrel O-Ring Shim Set

If you're tuning up your Airsoft AEG, this bundle is a great start! The Bolster Armouries AEG Power Enhancement Pack includes a Bolster Armouries Premium AEG spring at a power level of your choice, a Laylax/Prometheus Purple HOP-up bucking and nub and a Bolster Armouries HOP-up to Barrel O-ring Shim set. 

The Prometheus Purple HOP-up bucking will ensure your airseal is perfect on the HOP-up end and improve accuracy and consistency in most setups. The HOP-up to Barrel O-ring Shim set replaces the HOP-up spring, allowing you to completely close the gap between the HOP-up unit and gearbox, eliminating air leaks and maximising consistency. 

This will require familiarity with AEG internals to install, and installation will likely void the warranty of your original AEG, so make sure you're certain, or that your warranty period has expired, before attempting installation. 

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  • Made in England
  • Fits most Airsoft AEGs
  • Different strengths available


Springs are the perfect upgrade for an instant FPS boost! They fit in most standard AEGs and have a relatively simple installation process. Many rifles these days have some sort of quick-change spring system which makes your life even easier when upgrading your rifles.

The Bolster Armouries Premium AEG Spring is the best of the best when it comes to internal springs. These are the same springs used in our Bolster Armouries rifles, that's just how premium these springs are! If you want your rifle shooting like a Bolster Armouries ONYX, then the Bolster Armouries Premium AEG Spring is certainly a step in the right direction!

£5.00 Pack price
Normally £5.99
Save £0.99
Code: BA-HOPRINGS
  • Rubber construction
  • Replaces the HOP-up unit spring
  • Provides superb air seal

If you're the techy type and want to maximise your AEG's efficiency, the Bolster Armouries HOP-up to Barrel O-Ring Shim Set belongs in your toolbox! This set includes 10 o-rings designed to fit around the HOP-up unit and inner barrel, forcing it back to meet the gearbox as seamlessly as possible to promote maximum efficiency and reduce shot-to-shot FPS deviation.

This set is designed to replace the "one size fits all" HOP-up unit spring, providing a user-customisable solution to account for manufacturing tolerances. While this will take a bit of trial and error to get the perfect fit for your AEG it should prevent airseal qualities from reducing over time and avoid that annoying realisation that you forgot to reinstall the HOP-up spring after upgrading or maintenance!

The Bolster Armouries HOP-up to Barrel O-Ring Shim set should fit almost every AEG on the market and you probably won't need to use the full set, meaning you might even be able to replace two HOP-up springs with a single set.

£2.99 Pack price
Normally £4.99
Save £2.00
Code: PURPLE
  • Soft Bucking
  • Grippy Material
  • Air-Tight Design

A soft Hop Rubber for Marui compatible AEGs offering an air-tight design, which comes supplied with a nub and is a purple colour.

£9.00 Pack price
Normally £11.99
Save £2.99

Specification

Bundle Category
Springs

General

Over 18 Only Icon
Over 18
No
Package
Included Items
Hop Rubber, Spring, O-Ring Shim Set,
Screwdriver Icon
Prebuilt
No

Weapon Specific

Power Source Icon
Powered By
Electric

Customer reviews

5 / 5
3 reviews for Bolster Armouries AEG Power Enhancement Pack
Reviews.io customer reviews
Matthew Aylen
Matthew Aylen
Written on 17/08/2025
Does exactly what it says on the "tin". Good product.
Rated 5 out of 5
Matthew Aylen
Matthew Aylen
Written on 17/08/2025
Does exactly what it says on the "tin". Good product.
Rated 5 out of 5
Robert Burnside
Robert Burnside
Written on 25/07/2025
As advertised.
Rated 5 out of 5