Airtech Studio Spring Shims

£9.95

Fine-tune your AEG’s FPS without changing the spring
Add roughly 5 to 20 FPS with four graduated shims
Combine shims to dial in exact power
Stay under site limits quickly and repeatably
10mm inner diameter suits most Tokyo Marui guides
Reinforced polymer for durable, reliable use

Out of stock

Guaranteed Safe Checkout

Why Buy From Platoon Stores

In-House Repair Workshop in Rochester Kent

Kent's Only Authorised 5.11 Tactical Retailer

UKARA Registered Retailer

Try it on our range. There is an indoor airsoft range at the Rochester shop, so you can chrono it, test an upgrade or get a feel for how it shoots. About the range

Similar, in stock now

This one is out of stock. These are ready to ship today.

What our customers are saying

Be the first to leave a review.

Write a Review

There are no reviews yet.

Description
Specification

Airtech Studios Spring Shims

Airtech Studios Spring Shims are a set of four polymer spacers that let you fine-tune the FPS of your AEG without swapping the spring. They slide onto the spring guide inside the gearbox to add tension to the existing spring.

Precise FPS Control

Each shim is a different thickness. Fitted from smallest to largest they add roughly 5, 10, 15 and 20 FPS, and they can be combined to dial in the exact power you need. That makes staying under a site limit quick and repeatable.

Specifications

This set has a 10mm inner diameter to suit most Tokyo Marui spec spring guides. Krytac, VFC and ASG guides use the 11mm version, so check your platform before ordering. The shims are moulded in green and grey reinforced polymer.

Tune Your Setup

An easy alternative to cutting springs or buying several. Browse more airsoft upgrade parts or our airsoft repair service in Kent.

Product information reviewed by James Smith. Every gun is checked & serviced by our Rochester workshop before dispatch.

General
Brand	Airtech Studios
Colour	Green and grey
Other
Type	Spring shims / spacers (set of 4)
Function	Slide onto spring guide to add tension
Fitment	Inside AEG gearbox
Material	Reinforced polymer
Inner Diameter	10mm (Tokyo Marui spec guides)
Alternate Version	11mm for Krytac/VFC/ASG
FPS Increase	~5, 10, 15, 20 FPS (per shim)
Combinable	Yes, stackable for fine-tuning
Note	Increases approximate, vary by setup

Recommended upgrades & accessories

Frequently asked questions

What do spring shims do?

They slide onto the spring guide to add tension to your existing spring, raising FPS without buying a new spring.

How much FPS will they add?

Roughly 5, 10, 15 and 20 FPS per shim, and they can be combined. Actual gains vary with your spring, hop and barrel.

Which version do I need?

This 10mm set suits most Tokyo Marui spec spring guides. Krytac, VFC and ASG guides use the 11mm version.

How many shims are included?

Four shims of different thicknesses, moulded in reinforced polymer.

Can they help me stay under a site limit?

Yes. Because they are removable and stackable, they make fine-tuning to a site limit quick and repeatable.

Airtech Studio Spring Shims

Similar, in stock now