FIGHTING BRO M140 SPRING

The Fighting Bro M140 Spring is a premium upgrade part designed for players who want maximum power and performance from their gel blaster.
 
Crafted from high-quality steel and heat treated for durability, this spring is built to handle the demands of serious gameplay.
 
Each batch is carefully measured for consistency, and its linear spring design ensures smoother compression, improved reliability, and consistent FPS output.
 
Compatible with a wide range of blasters — including
M4A1 Gen 8
 M4A1 J9 
SCAR V2 
SAW M249 
Kriss Vector V2 
HK416 
Kublai M4 
P90 
M4SS
 
The M140 spring is the perfect choice for those seeking an edge in battle.
 
Upgrade your blaster today with the Fighting Bro M140 Series Spring and experience the difference in power and consistency. 
 
(Due to increased spring pressure, it is recommended by our technician to install metal gears and piston to decrease likely hood of failure as well as short stroking for pressure mitigation.)