WARNING - IMPORTANT
Small HPA lipo battery (7,4V 250mAh) don't work with SPECTRE Mk3!
SPECTRE uses proprietary, trigger board and wire harness! SPECTRE Mk3 uses a 6-pin configuration.
SPECTRE Mk3 is not compatible with any electronics available on the market (not compatible with Polarstar nor GATE electronics).
 
DELIVERY ESTIMATION: Starting 5 January 2026.
 
Thanks to the feedback of the SPECTRE Mk2, we are introducing an updated version: SPECTRE Mk3!

Following the same design of Mk2, SPECTRE Mk3 is an electromagnetic HPA drop in engine kit. It replaces internal parts inside the gearbox shell of AEG replicas, with Tokyo Marui standard V2/V3 dimensions.
Powered by electromagnetic actuators instead of MAC valves, SPECTRE doesn't require air to move the nozzle or deliver air to the barrel,
Mk3 actuators are made out of stainless steel for improved performances,
Up to 15% more shots on your air tank compared to other engines,
Put your favorite AEG nozzle on your SPECTRE engine to get the best performances.
Get the same performances and functionnalities as the best engines on the market.
 
You can find all information about SPECTRE on the dedicated page here.
 
 
ABOUT OPTIONS
OPTION #1: Trigger board
Please select first your replica platform you want to use with SPECTRE: V2 (M4), V3 (AK) or universal Plugboard (soldering tools required for this option).
 
OPTION #2: Wire harness length:
20cm: if you want to put your FCU in your grip, or put your FCU in your AK handguard,
30cm: for V3 (AK) and V2 (M4) with short/collapsible stocks,
40cm: for V2 (M4) with standard buffer stock length or full-stock (like M16).
 
OPTION #3: FCU connector:
Please select the same connector as your battery.
/!\ WARNING /!\ small HPA lipo battery (7,4V 250mAh) don't work with SPECTRE!
 
OPTION #4: Semi-only:
Need a semi-only version due to your state laws or your field restrictions? Please select 'Yes' under the semi-only option. Your SPECTRE's FCU will be identical but you will not be able to choose any other firing mode than 'SEMI' on the programming display. Please note that this option is not reversible!
 
 
WHAT'S INCLUDED
1x SPECTRE Mk3 HPA engine,
1x SPECTRE FCU, 6-pins (SPECTRE-proprietary),
1x Trigger board / Universal Plugboard, 6-pins (SPECTRE-proprietary),
1x Wire harness (6-pins, SPECTRE proprietary),
1x Connector/adapter for FCU (please choose your connector in the options),
1x M5 air fitting + 30cm of nylon tubing 6x1mm,
1x SCALAR patch and sticker.
 
 
WHAT'S NOT INCLUDED
You need to get a QD coupling (EU or US), to fit the 6mm air line of your engine,
You need a 7.4V (2S) or 11.1V (3S) lipo battery with the same connector as the option you chose for your FCU,
You need an AEG nozzle to complete your engine. SPECTRE Mk3 is shipped without any AEG nozzle!
 
 
 
TECHNICAL CHARACTERISTICS
SPECTRE Mk3 is designed to fit in V2 and V3 Tokyo Marui gearbox shells (standard shells).
Engine comes with either a Dean connector, a RCY (JST) connector or a XT-30 connector for better performances (to use with batteries made for drones).
By default, engine works with AEG 7.4V (2S) lipo battery. You can also use 11.1V (3S) battery to reduce poppet and nozzle dwell, thus making the engine faster to cycle.
 
 
FCU CHARACTERISTICS 
FCU for SPECTRE has the same size as a Polarstar FCU Rev 3.0 and is packed with the following functionalities:
Profile: have two uppers for your AR? Change from profile 1 to profile 2 to save different settings according to your upper,
Rate of fire: achieve 25RPS without any tweaking,
Selector 1 and 2: choose the firing mode of the selector position: Semi, Full, Burst 2/3/4/5 or Binary,
Dwell times: all settings to tune your engine: poppet dwell, nozzle dwell, BB dwell, anti-stiction,
FCU comes with the connector you choose when making your order,
FCU works with either a 7,4V (2S) lipo battery or a 11.1V (3S) battery.  
 
 
MATERIALS
Cylinder and valve: CNC-machined nickel-plated Stainless Steel
Body: CNC-machined anodized Aluminium 7075
Polymer parts: Tough resin and PA12-CF
Air fitting: Nickel-plated brass (COTS components)
Armature: brass and ferrous steel (COTS components)
All O-rings: NBR70
 
 
All pictures are work-in-progress, not final product. Final product can slightly changed from pictures.