Description
Ares M45X-S with EFCS Gearbox (S-Class S – Black – AR-087E)
The S-Class S (AR-087E) is one of the configurations in Ares’s M45X-S family of compact SMG-style AEGs. Finished in black, it brings together M4-style controls, a 9mm SMG-style magazine and Ares’s EFCS electronic gearbox in a short, quick-handling package for close-quarters games.
Every M45X-S shares the same core: a reinforced gearbox designed for the M45, an integrated EFCS module with built-in MOSFET, an Ares slim motor and a metal receiver held with steel pins and screws. Tool-less assembly and quick-change front sets let you strip, clean and reconfigure the gun far more easily than a conventional AEG.
About the S-Class S
Ares offers the M45X-S in several S-Class layouts, and this is the S-Class S, offered here in black. Please check the product images for the exact stock and front-end configuration; the gearbox, electronics, magazines and controls are the same as on the rest of the M45X-S range.
Flip-up iron sights give you a sight picture immediately, and the top rail takes a red dot or holographic sight. The ambidextrous safety selector makes the gun comfortable for either hand.
Performance
The EFCS module switches the motor electronically rather than through mechanical trigger contacts, so the trigger response stays sharp and the contacts do not burn. The built-in MOSFET means LiPo batteries can be used without an extra unit.
Semi and full auto are available straight away, and Ares’s separately sold EFCS programmer adds a three-round burst and other custom settings. Because the front sets can be changed without tools, the rifle can be adapted for different sites as your needs change.
Getting started
Charge your battery on a proper charger and fit it following the manual. Load a magazine and test-fire at a safe backstop, starting with the hop-up off and bringing it up gradually until shots fly flat. A few minutes of zeroing at the range makes a big difference to your confidence on the field.
Practise magazine changes and battery swaps at home, and get the rifle chronographed at the site before your first game.
Key features
- Compact SMG-style AEG on the Ares M45 platform
- Reinforced M45 gearbox with integrated EFCS module
- Built-in MOSFET, suitable for LiPo batteries
- Ares slim motor
- Metal receiver and handguard, steel pins and screws
- Tool-less assembly and quick-change front sets
- Ambidextrous safety selector
- Semi and full auto; burst and custom modes with the optional EFCS programmer
- Flip-up iron sights
- S-Class S configuration
- Black finish
Compatibility
The M45X-S only takes Ares M45 series magazines, which come in mid-cap and low-cap styles; standard M4 AEG magazines and other SMG magazines will not fit, so make sure any spares are listed for the M45. Because the EFCS module includes a MOSFET, LiPo batteries can be used; choose a compact pack that fits the battery space of this configuration and check the connector before you order.
The rails accept standard 20mm accessories such as red dots, torches and lasers. Front sets, gearbox parts and many internals are specific to the M45 series, so check that any upgrade is listed for it. The EFCS programmer is sold separately.
Care and maintenance
Take the battery out after every game and store it away from the rifle, and charge LiPo batteries only on a proper balance charger under supervision. Clean the inner barrel with a cleaning rod and a dry cloth patch every few games, as dirt and broken BB fragments are the main causes of flyers. Stick to good quality seamless BBs of a consistent weight.
Check screws, the flash hider and any mounts before each game day, and store the rifle somewhere dry. Leave the hop-up at a light setting in storage, and if the rifle has an electronic trigger unit, a fully charged battery helps it read the trigger cleanly.
Who is it for?
The S-Class S suits CQB players who want a very compact, electronically controlled SMG, and outdoor players looking for a light second gun with familiar AR controls.
Please note: A battery and charger are not named in this listing, and spare magazines are not listed as included with this version, so please check with us before ordering. Always wear suitable eye and face protection and have the replica chronographed at your site before play.
Please note: what's in the box can vary between batches. If a detail such as included magazines, battery, charger or connector type matters to you, contact us or call 01842 683567 and we'll confirm before you order.










