Decision Trigger – Is this rifle for you?
 
✔️ Shoot at will if:
You demand full-metal realism: The heavy-duty aluminum construction and realistic weight provide a solid, professional-grade feel that mimics a real-steel AR-15.
You want refined gas performance: Equipped with the "System 7 Two" engine, this version offers improved gas efficiency and a more stable bolt cycle compared to older GBBR designs.
You enjoy authentic maintenance: The rifle features realistic field-stripping capabilities, making it a dream for players who like to clean and maintain their gear like the real thing.
 
❌ Hold your fire if:
You want a modern "tacticool" look: This is a classic M4A1 with standard polymer handguards; you’ll need to buy additional rails if you want to mount lights, grips, or lasers.
You are an "ammo spammer": With a realistic 40-round magazine capacity, you’ll be outgunned by AEG players carrying high-cap mags in a prolonged firefight.
You play in freezing climates: Like most green gas rifles, it is susceptible to "cool down" and power loss in low temperatures compared to KSC’s CO₂ pistol line.
 
『Takeaway: The KSC M4A1 V.2 is a purist's gas blowback rifle—rugged, reliable, and unapologetically classic. It trades modern rail space and high magazine counts for a visceral, metal-clanging shooting experience and mechanical authenticity. It’s the perfect foundation for a military-spec loadout or for the player who wants a gas rifle that feels like a tool, not a toy.』
 
Specifications
Overall length: 885mm (805mm with stock shortened)
Weight: approx. 3,500 g
Magazine capacity: 40 rounds
Fire mode: Semi-auto, full auto
System: Gas blowback (System 7TWO)
 
Increase your firepower with this additional 40 rounds magazine.
 
The KSC Airsoft M4A1 V.2 Gas Blowback Rifle represents the refined evolution of the brand gas-powered AR platform, integrating years of development and user feedback into a new foundational model. Based on the iconic Colt M4A1, this Version 2 emphasizes structural rigidity, realistic operation, and enhanced bolt performance.
 
Reinforced Receiver – Built for Rigidity
Version 2 introduces a redesigned lower receiver, engineered to perfectly match the tough, one-piece upper receiver.
 
The result is:
Exceptional structural rigidity
Improved alignment between upper and lower assemblies
Enhanced consistency during firing
 
This rigid construction directly contributes to stable cycling and improved shot consistency under semi- and full-auto operation.
 
System 7TWO Bolt – Enhanced Realism
The receiver is equipped with the latest System 7TWO bolt, further refining:
Gas efficiency
Bolt carrier speed
Recoil impact
Cycling reliability
 
Additionally, the bolt release procedure has been made more realistic, closely replicating the manual of arms found on the real platform.
 
Functional Crane Stock
The rifle comes standard with a crane-type adjustable stock, featuring:
Multiple length-of-pull positions
Waterproof storage compartment
Improved ergonomics for various shooting stances
 
The adjustable stock allows the overall length to be reduced for tighter environments while maintaining full operational capability.