Upgrade your TM or WE G series GBB pistol with the premium Cowcow Tech 140% Hammer Spring. Crafted from high-quality steel, this robust and durable spring provides a 40% increase in strength over the original stock spring, ensuring a more reliable and powerful performance. Perfect for enthusiasts seeking enhanced firing consistency and longevity, this spring is an essential enhancement for your pistol. Available in a standard size to precisely fit your firearm, choose Cowcow Tech for unparalleled quality and performance.