UNICORN Competition Grade GBB hop-up rubber (hardness: 80°) designed specifically for gas-operated GBB rifles (Tokyo Marui, VFC, KJ, etc.). Made from a highly durable NBR rubber composite that provides high friction and strong ball rotation. The arrow-shaped contact surface guides the ball precisely and reduces misalignment of the ball inside the hop-up rubber.
Features:
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Material : NBR rubber compound, long-lasting and reliable
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Compatibility : GBB systems such as TM/VFC/KJ/WE, and with TM VSR inner barrels.
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Usage : Easy drop-in replacement - no modification
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The manufacturer recommends using balls over 0.25g for optimal performance
