Description
Specna Arms RRA SA-P03 PRIME™ BLDC™ HAL™ ETU AEG - Black
The Specna Arms RRA SA-P03 PRIME™ is a full-metal M4-style AEG equipped with a Dark Matter™ High Speed 27k brushless motor, programmable HAL™ ETU electronics and a reinforced Aether™ V2 gearbox. Its 16:1 CNC steel gears, Magnus™ TDC hop-up, Helium™ Flat Hop bucking and 6.02 mm precision inner barrel provide a strong foundation for responsive trigger performance and consistent shooting straight out of the box.
The PRIME™ series combines proven Specna Arms designs with internal components commonly associated with upgraded airsoft rifles. The Rock River Arms-licensed SA-P03 features a classic KAC-style RIS handguard, full-metal receivers and an adjustable stock. It is particularly suitable for players who prefer a traditional M4 carbine appearance but want modern electronics and a brushless motor without immediately investing in aftermarket upgrades.
Dark Matter™ 27k Brushless Motor
The factory-installed Specna Arms Dark Matter™ High Speed 27k brushless motor is one of the most significant upgrades in the PRIME™ series. Unlike conventional brushed AEG motors, its design eliminates mechanical carbon brush contact, reducing wear and improving electrical efficiency.
The motor provides strong starting torque and responsive acceleration, allowing the gearbox to complete its firing cycle quickly. This is particularly useful in semi-automatic operation, where motor response directly affects the delay between pulling the trigger and firing a BB.
The brushless construction also reduces heat generated by brush contact and eliminates the need to replace worn carbon brushes. Combined with the 16:1 steel gear set, it provides responsive operation without requiring a separate motor upgrade.
HAL™ ETU - Programmable Electronic Trigger System
The factory-installed HAL™ ETU uses magnetic Hall-effect sensors to detect trigger movement without conventional mechanical trigger contacts. The system also uses optical gear detection to monitor gearbox operation.
Trigger sensitivity, pre-cocking and firing modes can be programmed directly through the trigger and fire selector, without opening the gearbox or connecting an external programming device.
Adjustable trigger sensitivity and pre-cocking
Trigger sensitivity can be adjusted across five levels, corresponding to 20%, 40%, 60%, 80% and 100% of the trigger travel. A shorter activation distance provides a more responsive trigger feel, particularly useful for rapid semi-automatic shooting.
The six-level pre-cocking function allows the piston to remain partially tensioned after a shot, reducing the movement required before the next shot. This can further improve trigger response, although higher settings increase the mechanical load on the spring and gearbox components.
Programmable firing modes
- AUTO position: Full Auto, Semi-Auto, 3-Round Burst or 5-Round Burst
- SEMI position: Semi-Auto, Binary Trigger, AUG Mode or Sniper Mode
- Binary Trigger: One shot when the trigger is pulled and another when released
- AUG Mode: Semi-automatic fire with a partial trigger pull and automatic fire with a full pull
- Sniper Mode: Semi-automatic fire with a two-second delay between shots
The HAL™ ETU also includes low-battery warnings, electronic protection functions and an adjustable active brake feature.
Important: Specna Arms instructs users to disable the HAL™ active brake when using a brushless motor. Since the SA-P03 is equipped with a Dark Matter™ BLDC motor, the active brake must remain disabled.
Reinforced Aether™ V2 Gearbox
The SA-P03 features Specna Arms' reinforced Aether™ Version 2 gearbox, designed to withstand demanding AEG operation while providing practical features for maintenance and future upgrades.
The gearbox shell includes a strengthened front section, inspection openings for piston Angle of Engagement (AoE) and pre-cocking, an anti-reversal latch release function and mechanical trigger adjustment.
The internal components include:
- Reinforced Aether™ V2 gearbox shell
- CNC-machined steel gears with a 16:1 ratio
- Reinforced polymer piston with a full-length steel tooth rack
- Aluminium compression components
- Sealed aluminium nozzle
- Steel cylinder
- Bearing-equipped spring guide
- 8 mm J-Cage ball bearings for the bevel and sector gears
- 8 mm solid bushings for the spur gear
- Mancraft trigger
- Factory-installed HAL™ ETU
The combination of a reinforced gearbox shell, steel gears and steel-toothed piston provides a durable mechanical foundation for the high-speed brushless motor. The inspection openings and adjustment features also make the gearbox easier to maintain than a conventional basic gearbox.
Magnus™ TDC Hop-Up and Helium™ Flat Hop Bucking
The SA-P03 uses the Specna Arms Magnus™ TDC (Top Dead Center) rotary hop-up chamber. Its adjustment system applies pressure centrally and vertically to the hop-up bucking, helping maintain consistent contact with the BB and making adjustments more repeatable.
The Helium™ Flat Hop bucking provides a broad contact surface designed to generate stable backspin, particularly useful when using heavier BBs.
A 6.02 mm steel precision inner barrel, approximately 380 mm long, completes the hop-up and compression assembly. Together, these components provide a well-equipped accuracy system without requiring an immediate hop-up or barrel upgrade.
ESA2™ Quick Spring Change System
The ESA2™ quick spring-change system allows the main spring to be replaced without opening the gearbox. This makes it easier to adjust the rifle's muzzle energy to suit different field limits.
The package includes additional M90 and M135 springs, providing options for lower- and higher-powered configurations. Actual muzzle energy depends on the installed spring and compression system and should be checked with a chronograph after changing springs.
When using the M90 spring, Specna Arms recommends a 7.4V battery to reduce the risk of malfunctions caused by excessive gearbox cycling speed.
Full-Metal Construction and Classic RIS Handguard
The Rock River Arms-licensed SA-P03 features metal upper and lower receivers with a Nano Coating surface treatment designed to improve resistance to scratches. The reinforced lower receiver and individual serial number complete the external construction.
The classic KAC-style polymer handguard features four-sided 20 mm RIS rails, allowing compatible accessories such as weapon lights, foregrips and other rail-mounted equipment to be attached. A vertical foregrip and two rail covers are included.
The upper Picatinny rail provides mounting space for optical sights, while the rifle retains its traditional M4-style front sight and rear sight arrangement.
The six-position adjustable stock allows the overall length to be adapted to the player. A 14 mm CCW muzzle thread beneath the flash hider accommodates compatible tracer units, suppressor replicas and other muzzle devices.
Technical Specifications
- Manufacturer: Specna Arms
- Licensed brand: Rock River Arms (RRA)
- Series: PRIME™
- Model: SA-P03 BLDC™ HAL™ ETU
- Product type: Electric airsoft rifle (AEG)
- Platform: M4 / AR15
- Calibre: 6 mm BB
- Receiver material: Metal
- Receiver finish: Nano Coating
- Handguard: KAC-style polymer RIS, 20 mm rails
- Stock: Six-position adjustable
- Gearbox: Reinforced Aether™ V2
- Electronic trigger unit: HAL™ ETU
- Motor: Specna Arms Dark Matter™ High Speed 27k BLDC brushless
- Motor type: Long
- Gear ratio: 16:1
- Gears: CNC-machined steel
- Piston: Reinforced polymer with full-length steel tooth rack
- Bearings and bushings: 8 mm J-Cage ball bearings and solid bushings
- Quick spring change: ESA2™
- Additional springs: M90 and M135
- Trigger sensitivity: 5 adjustable levels
- Pre-cocking: 6 adjustable levels
- Active brake: Must be disabled with the installed brushless motor
- Firing modes: Programmable Semi-Auto, Full-Auto, Burst, Binary, AUG and Sniper modes
- Hop-up chamber: Adjustable Magnus™ TDC
- Hop-up bucking: Helium™ Flat Hop
- Inner barrel: Steel precision barrel
- Inner barrel diameter: 6.02 mm
- Inner barrel length: 380 mm
- Overall length: Approximately 800-880 mm
- Weight: Approximately 2800 g
- Magazine type: S-MAG mid-cap
- Magazine capacity: 125 rounds per magazine
- Battery connector: T-plug / Deans
- Compatible battery voltage: 7.4V or 11.1V, depending on configuration
- Battery compartment: Stock / buffer tube
- Muzzle thread: 14 mm CCW
- Blowback: No
- Colour: Black
- Manufacturer product code: SPE-01-042283
- EAN: 5902543920362
Package Contents
- 1 × Specna Arms RRA SA-P03 PRIME™ BLDC™ HAL™ ETU AEG - Black
- 2 × 125-round S-MAG mid-cap magazines
- 1 × BB speedloader
- 1 × M90 replacement spring
- 1 × M135 replacement spring
- 1 × Vertical foregrip
- 2 × RIS rail covers
- 1 × Cleaning rod
- 1 × Mini-Tamiya-to-Deans battery adapter
Battery and charger are not included and must be purchased separately.
HAL™ Trigger Activation Before First Use
The HAL™ trigger must be activated before using the rifle for the first time:
- Set the fire selector to SAFE.
- Connect the battery while the selector remains in SAFE.
- Wait approximately three seconds until the rifle emits a beep.
- Pull the trigger fully and hold it for approximately five seconds until another beep is heard.
The second beep confirms successful activation. Repeat the procedure if the HAL™ factory settings are restored.
Keep the active brake disabled when using the factory-installed brushless motor.
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Pätevä pyssy hintaansa nähden, 0,36g kuulilla ainakin ampuu hyvin. Aseen kädensija, tukki ja lipas tuntuvat heiluvan vähän turhan paljon minun makuun joten siitä vähän miinusta. Ostin 3000mAh 11,1v akun mukaan ja se mahtuu kyllä aseen sisään, mutta silloin on pakko pitää tukki täysin pitkänä. Kahdessa päivän pelissä kului vain 10% varausta joten pienempikin varmasti riittää.