"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
137 Reviews
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review
Works better than original. Significantly lightens trigger pull and provides a crisper feel.
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Great product!!
Extremely easy to install and immediately fixed my sear spring problem. My gun would fire 2 or 3 rounds and then not reset the hammer. I tried the invert the spring modification but that did not work. The problem still persisted. I found this product from one of the Buckmark forums and order the part. I am very pleased with this fix. I have recommended this product to other Buckmark owners.
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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!
