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  • Regular price $549.99


Built Material
Stamped steel, Aluminum, Nylon & Glass Fiber
Shooting Modes
Semi, Full-auto
Magazine Capacity
Recoil shock
B.R.S.S Recoil ON / OFF
Power Source 7.4V22C(Li-Po) or 9.6V(Ni-mh or Ni-Cd)


- FULL METAL construction meaning this airsoft gun has matching metal parts as its real counterpart
- Innovative 2nd Gen B.R.S.S. HEAVY (Bolt Recoil Shock System) generates realistic recoil during each shot, while preserving the ability to take regular TM type MP5 magazines.  Recoil felt is stronger than that of the Tokyo Marui Next Gen AEG's) 
- Stamped steel upper receiver, cocking tube, and receiver end cap
- Fiber reinforced Nylon lower receiver and grip
- Polymer original A series handguard
- Heavy weight steel flash hider
- Nylon Fiber retractable stock with metal guide legs
- 14mm- threaded aluminum CNC outer barrel
- Metal one piece IMPROVED hop up unit and metal one piece outer barrel
- Metal sling mounts integrated in front sight block and receiver end cap
- 6.00mm Precision inner barrel
- High Torque motor with heat dissipating end plate
- Metal furniture: Charging handle, magazine catch, selector, front sight, flash hider
- Other metal parts: Rear sight assembly, trigger, bolt, magazine, front/rear sling mounts, steel motor pinion gear, body pins, etc.
- Reinforced Vr 2 B.R.S.S. Gear Box with: M120 spring, 2020 Improved MIM Steel Gears, Steel Bushings, aluminum cylinder, aluminum cylinder head with double o-rings and impact pad, Aluminum piston with full steel teeth, aluminum one way piston head with bearings, heavy weight steel spring guide, POM nozzle 
- 11.1V Lipo  ready!

- Battery and charger NOT included

- Package includes: Airsoft gun, 200rd high capacity magazine, battery plug and wire extension, manufacturer stickers

Powerful Recoil Movement
B.R.S.S technology generates strong recoil power by triggering B4A1.The strong power can even stamp a nail into a wooden table. The feeling of stock punching back each shot is a real pleasure for owner who enjoys a "kick" similar to firing a real M4A1.
Low Energy Consumption
B.R.S.S technology provides great power recoil action even while by using Low Voltage batteries. Its unique design makes this AEG last much longer, with an outstanding reliability.
High Durability
B.R.S.S Gear are made of firm and strong materials, which makes B4A1’s gear more stronger to capable with strong recoil shock, which adds extension period of AEG’s life.
High Compatibility
B.R.S.S Gearbox system offers a high compatibility with other brands’gearbox parts. Over 90% of B.R.S.S parts are compatible with those available on the market. 
This advantage grants players with lower costs and bigger choice on repairs, upgrades, modifications and customization.