

- Spring Steel construction
- Improved feeding in high ROF AEGs
- Ideal for high-speed builds & DSG setups
If you're working on a beastly high-speed build, but it won't feed as fast as it cycles, the Bolster Armouries Premium 200% AEG Tappet Spring will solve that! Made in England from high-quality spring steel, this tappet plate spring is twice as strong as the standard, meaning it's capable of feeding at almost twice the speed, provided you're using magazines capable of high-speed feeding (PTS EPM1-RX, etc).
If you're working on a DSG or any build with a rate of fire of over 25 rounds per second, the Bolster Armouries Premium 200% AEG Tappet Spring is the key to reliable feeding!
Fast Delivery
Delivery & Postage
Here at Patrol Base, we send all our packages from our Warehouse based in the UK with the exception of European Warehouse Items. All of our parcels are sent with specially picked couriers to ensure your parcels get to you on time and in one piece.
For more information please check out our Delivery Information Page.
Estimates
Below are some rough postage prices for orders. Please note these are subject to change and are only a rough guide. For a more accurate postage estimate please use the Postage Calculator at the basket.
UK 3-5 day Standard
£6.95
From
Dispatched with 24hr UK mainland
£8.95
From
Highlands / Islands
£24.99*
From
* Please note that Scottish Highlands, and Islands postage prices can vary wildly. Please refer to the Postage Calculator at the basket for the lowest possible price.
Returns
We want you to be absolutely happy with our products and services, so we provide the simple Patrol Base guarantee: if on receiving your item you are unhappy with your item for any reason then simply send it back to us. We will replace or refund the item.
You can return any item for any reason whatsoever, even if you have just changed your mind, within 14 days of receipt of the order. This is in addition to your rights under the Consumer Protection (Distance Selling) Regulations 2000.
For more information on returning products, and how to do it please visit our Returns Policy Page.
Description
Features
- Spring Steel construction
- Improved feeding in high ROF AEGs - If you're skipping shots, this should cure it!
- Ideal for high-speed builds & DSG setups
Package Includes
- Bolster Armouries Premium 200% AEG Tappet Spring
Specification
General
Parts & Accessories Type | Electric Internal Parts |
|---|---|
Internal Part Type | Spring, Tappet Plate Spring, |
Warnings | Parts Fitting Unique Part Custom Parts |
Weight and Dimension
Weight (KG) | Approx.0.005KG |
|---|
Construction
Item Colour | Grey |
|---|---|
Construction | Spring Steel |
Internal Part Construction | Spring Steel |
Part Specific
Part for Power Source Type | Electric |
|---|---|
Package Includes | Tappet Plate Spring |
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.
For more information with fitting parts, or should you require help, feel free to get in touch with our Workshop Department via our Contact Us Page.
Terms and Conditions relating to parts fitting can be read on our Terms and Conditions Page.

