BCA Gearbox Upgrade Spring (M90-M150)
Brands are as follows: Ace1Arms / Core Airsoft / Blitz Tech Spring M90- 290 to 300 fps .20g BBs varies by AEG. Spring M100- 340 to 350 fps .20g BBs varies by AEG. Spring M110- 375 to 390 fps .20g...
ASG EVO 3 A1 Steel Spring Guide (Bearing)
Replacement/upgraded spring guide with ball bearings for the ASG Scorpion EVO line. Ball bearings reduce torsional stress on the main spring.
Tienly Super Rotary AEG Bearing Spring Guide (V2 / V3)
Tienly bearing spring guides feature high-quality ball bearings which allow the spring to rotate during compression and release freely. This alleviates binding of the spring and alleviates torsional strains on the spring - leading to more consistent FPS. The inherent thickness...