Everything that you see on our website is in Stock, in High Wycombe and Available for Immediate Dispatch or in Store Collection

ACM M110 AEG Hyper Spring (SP110)

Achieve the perfect balance of velocity, consistency, and field-legal power with the ACM M110 AEG Hyper Spring (SP110)! Engineered from high-tensile, heat-treated steel wire, this premium main power spring provides dependable output in the range of ~350 to 380 FPS (depending on air seal compression and barrel length). Featuring an advanced non-linear (variable pitch) coil winding design, it reduces startup strain on your motor and battery while maximizing power transfer to the piston. Ideal for standard outdoor field limits and versatile rifle setups, the ACM M110 Hyper Spring is a drop-in upgrade compatible with Version 2, Version 3, and most standard AEG gearboxes!

£7.99
SKU
511452
In Stock
Free Delivery & Returns*
SHIPPING OPTIONS
DELIVER TO United Kingdom
TYPE HOW MUCH?
Standard £0.00
Expedited £4.99
DELIVER TO Other countries
TYPE HOW MUCH?
International £14.99

Fine-tune your airsoft gun's muzzle velocity for reliable outdoor field performance with the ACM M110 AEG Hyper Spring (SP110)! Designed as a high-consistency main power upgrade for Airsoft Electric Guns (AEGs), this spring delivers the ideal velocity profile needed to reach outdoor field limits without placing unnecessary mechanical stress on your internal gearbox components.

High-Tensile Steel Wire & Non-Linear Coil Design Constructed from high-grade, heat-treated alloy spring steel, the ACM M110 Hyper Spring is specifically tempered to resist compression fatigue, deformation, and power drop-off after thousands of firing cycles. It features a non-linear (variable pitch) coil configuration that spaces the spring coils unevenly along its length. This smart design allows the initial compression stroke to require less rotational torque from your motor and gear set, easing strain on your trigger switch, battery, and bevel gear during piston startup. Once fully drawn back, the tightly wound section releases smooth, linear forward thrust against the piston assembly.

Optimal Velocity & Reduced Wear In a standard AEG build with efficient air-seal compression (using 0.20g 6mm BBs), an M110 rating typically yields between 350 and 380 FPS—making it one of the most versatile spring strengths for general outdoor skirmishing and mid-range engagements. Both ends of the spring are precision-ground flat to ensure flush seating against bearing spring guides and piston heads. This flat-ground finish prevents rotational twisting, spring binding, and uneven lateral wear inside the cylinder assembly during rapid full-auto firing sequences.

Universal AEG Gearbox Fitment Built to standard industry dimensions, the ACM M110 Hyper Spring drops smoothly into Version 2 (M4/MP5/G3), Version 3 (AK/G36), Version 6 (P90), and quick-change spring gearbox platforms. Whether you are tuning a newly acquired rifle, replacing a fatigued stock spring, or optimizing a custom build for maximum air-seal efficiency, the ACM M110 AEG Hyper Spring (SP110) offers excellent durability, smooth operation, and exceptional value for every player.

More Information
SKU 511452
Brand Double Bell
Weapon Category Parts
FPS 301 - 400
Spring Type AEG
Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account
Delivery

Our courier partners deliver from Monday to Friday, excluding Bank Holidays. We will attempt to dispatch all packages within 24 hours, although at peak times this may take slightly longer. Orders with products with two-tone service or Defence Check may take longer to dispatch.

Once the order is dispatched you will get an email with the tracking number and which courier partner it’s going to be delivered via. Any missing/incorrect items need to be reported with 48hrs of signed delivery.

Returns

Click Here to Download the Returns Form (PDF Format)


Faulty Product?! Unfortunately that is part of life but be rest assured we are here to help! Contact one of our friendly staff via phone or email. Stating what the problem is, if we can resolve the problem via phone or email great if not then they will advise how to send it back and what details we require.

Two tone
We can two tone any weapon we sell at Bespoke Airsoft. The purpose for two toning is if you do not hold a valid defense under the Violent Crimes Reduction Act (VCRA, 2006) which is to prevent the misuse of Replica Weapons, which applies in England, Scotland, Wales and Northern Ireland.

The gun will be sprayed 51% in a bright/primary color (we do only blue, green and red currently). The process of two toning currently runs at 2 working days depending on Drying Time, which is effected by Ambient Temperature and Weather. and currently no express delivery is available for this even if you select it at checkout.

FAQs

1.     What is a BB gun used for?  BB guns are mostly used for practice shooting and training. The stronger ones (i.e. Air Rifles) can also control pests or hunt small animals.

2.     Do you need a Licence in the UK for a BB gun? No, you don't need a licence for a BB gun in the UK, but there are rules. The BB Gun needs to be in two colours; one has to be a primary. All our guns are on the website as per default.

3.     Is a BB gun a good weapon?   BB guns, despite sometimes being seen as toys, can be dangerous. They fire pellets at high speeds and can cause serious harm, or even be deadly in some situations.

4.     Can you shoot BB guns in public in the UK without a Firearm license? BB guns in the UK navigate a legal grey area. While certain models, notably low-power 'soft air' types, typically evade classification as section 1 firearms, more potent versions may require a valid firearms certificate to avoid legal repercussions.

5.     Can you shoot a BB gun in your garden? You can use a BB gun in your garden under UK law, but you have to ensure the pellets don't go into your neighbour's yard, plot or land. If they do and you don't have permission, it's against the law.

6.     Which UK law am I breaking if the pellets go into my neighbour's law without permission?  If your BB gun pellets go into your neighbour's yard without permission, you're breaking UK laws. Specifically, the 1968 Firearms Act and possibly the 2003 Anti-Social Behaviour Act, because you may be causing your neighbours trouble or worry.

Discover Our Top Selling BB Gun Guides

Five Best BB Guns Under £30


Discover our five top selling BB guns under £30 guide here.

Five Top Selling Gel Blasters


Discover our top selling Gel Blasters guide here.

Gas guns


Discover our Gas guns guide here.

Toy BB guns


Discover our Toy BB guns guide here.

Five Top Selling BB Guns


Discover our five top selling BB guns of 2026 guide here.

Five Top Selling BB Gun Assault Rifles


Discover our top selling BB gun assault rifles guide here.

Six Top Selling BB Gun Machine Guns


Discover our six top selling full auto BB guns (best BB machine guns to buy) guide here.

Top 6 airsoft pistols


Discover our Top 6 airsoft pistols guide here.