GearBox Installation Instructions for the Browning Buck Mark
At a glance:
- Upgraded sear spring lowers trigger pull weight by .5lbs or more!*
- Installation frame houses spring for easy installation and consistent sear engagement
- No need to experiment with DIY spring fixes - one simple drop-in replacement!
The Browning Buck Mark has a great trigger right out of the box. But if you’re like many Browning Buck Mark owners, you’ve likely researched ways to lower the gun’s trigger pull weight and adjust the feel even further.
There are many DIY solutions out there, including the well-known “Heggis Flip” or Buck Mark sear spring flip. But these solutions can be complicated to perform, provide inconsistent results and can cause potentially dangerous issues with the fire control system.
Put an end to DIY fixes with the new GearBox for Browning Buck Mark from TANDEMKROSS! The GearBox is a simple, drop-in replacement for the factory Buck Mark sear spring that makes installation easier and lightens the trigger pull weight.
The GearBox comes complete with a redesigned torsion spring housed in a polymer installation frame. The frame captures the spring for easy installation and then, once installed, works as a guide for the spring, ensuring proper alignment and consistent engagement with the sear.
Simplify your trigger upgrades and install the TANDEMKROSS GearBox today. Pair with a Browning Buck Mark “Victory” Trigger for ultimate performance!
*Individual trigger pull weight results may vary.
*Fits all Buck Mark models including the Buck Mark Rifle
153 Reviews
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gearbox
Super simple, push the pin out, remove original spring, drop in gearbox, reinsert pin, and center front half of spring! Done deal, no fighting the Higgens'flip.
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great performance
The gearbox made a big difference in my Buckmark.
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GearBox
The "GearBox" works great. Easy to install in Buckmark. Used along with Victory trigger pull measured at about 2 lbs. Great feel. Very pleased.
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Gearbox
The GearBox was easy to install, and there was a noticeable reduction in the trigger pull. Another TK great addition. Thanks!
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Gearbox buckmark
This was a snap to put in. Along with the victory trigger it is a fabulous combination. If your Contemplating on buying this, do it now. These upgrades may be a good gun great!
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GearBox Browning Buck Mark
Great product, easy to follow installation video, works as advertised. I would recommend to family and friends. Overall very happy with speed of shipping and updates on package
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Easy to install
Easy to install and trigger feels great!
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Gearbox for Buckmark
Easy to install , not necessary to remove grips as shown in installation video . reduced stock pull about 1 pound to now 2.86 pounds . Also the feel is more constant in pressure . Highly recommended .
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Gearbox
I installed the Gearbox along with the Tandemkross victory trigger in my Browning Buckmark pistol. The factory trigger wasn’t bad, but the new setup is definitely better. I didn’t weigh trigger pull before or after, but it definitely feels lighter. Overall trigger travel is reduced also with the victory trigger. Overall I am very pleased with the upgrade.
