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Specna Arms M4 AEG Rifle CORE Series M4 RIS SBR

Specna Arms
SA-C04 Half-Tan



Specna Arms M4 AEG Rifle CORE Series M4 RIS SBR

Outstanding Construction Quality: The CORE Series M4 RIS SBR by Specna Arms brings top-notch build quality in a compact package, designed to enhance your airsoft gameplay. Constructed from durable, lightweight, fiberglass-reinforced nylon for the receiver, stock slide, SF stock, and pistol grip, it boasts metal parts for its barrel, RIS handguard, flash hider, and other key components for robust performance and longevity.

Quick Power Adjustment with ESA™: Integrated with the ESA™ Quick Spring Change System, this rifle lets you adjust power levels swiftly and conveniently to suit your playfield conditions. It not only boosts versatility but also ensures an ideal equilibrium between firing effectiveness and safety.

High Precision Shooting: Despite its smaller size, the rifle features a high-grade 6.03mm precision barrel, offering superior range and accuracy for your shots. It's well-suited to both close quarters combat and long-range encounters, lending you the competitive edge you need.

Extensive Customizability: This rifle includes a four-sided RIS handguard, enabling extensive customization with various tactical accessories. Additionally, the rifle is available in Black or Half-tan color options, further allowing aesthetic customization to suit your preferences.


  • Quick power adjustment courtesy of the innovative ESA™ Quick Spring Change System.
  • Lightweight yet durable construction using a mix of fiberglass-reinforced nylon and metal parts.
  • High-grade 6.03mm precision barrel ensuring better range and accuracy.
  • RIS handguard facilitating a broad range of accessory customizations.
  • Features an adjustable, extendable stock with an anti-slip pad for user comfort and stability.
  • Incorporates a flip-up rear sight that doesn't interfere with installed aiming devices.
  • Standard flash hider with a 14mm left-handed thread, suitable for silencer attachment.
  • Includes an additional M90 spring, facilitating quick muzzle velocity adjustment for close-ranged and indoor operations.


Overall Length 27.5 - 30.75 inches
Weight 5.3 lbs
Outer Barrel Length 10 inches
Barrel Thread 14 mm CCW
Inner Barrel Length 255mm
Inner Barrel Diameter 6.03mm
Muzzle Velocity ~380 FPS (default), ~310 FPS (with included M90 spring)
Fire Modes Safe/Semi/Full-auto
Color Black or Half-tan
Gearbox QD V2, 8mm bushings
Magazine Capacity S-MAG Hi-Cap with up to 380 BBs
Package Includes Replica, S-MAG Hi-Cap magazine, fixed iron sights, RIS rail covers, tactical forward grip, additional M90 spring
Battery Combo Adds 7.4V 1100mAh 20C LiPo Nunchuck, B3+ LiPo Charger