TandemKross GearBox Features The TandemKross GearBox replaces the factory Buck Mark sear spring with a redesigned torsion spring housed inside a polymer installation frame. This frame captures the spring during installation and continues to act as a guide afterward ensuring consistent alignment and engagement with the sear on every trigger pull. Many Buck Mark owners have turned to DIY solutions like the Heggis Flip to lighten their trigger but these methods can be difficult to perform correctly and can introduce dangerous inconsistencies into the fire control system. The GearBox eliminates that risk by providing a purpose engineered drop in replacement. Installing the GearBox typically lowers trigger pull weight by half a pound or more giving Buck Mark owners a noticeably lighter and more consistent trigger feel. Because it is a simple drop in part installation does not require the trial and error associated with DIY spring bending or flipping. TandemKross recommends pairing the GearBox with a Browning Buck Mark Victory Trigger for even greater performance gains. This upgrade is a safe reliable way to improve trigger feel on a Buck Mark without compromising the firearm s safety or function. TANDEMKROSS GearBox Specifications Manufacturer: TANDEMKROSS Model: GearBox Color: Black Material: Polymer Firearm Type: Pistol / Rifle Compatible Hosts: Browning Buck Mark Available At: GrabAGun