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
168 Reviews
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GearBox (Buckmark)
Easy install. Great tutorial video. Worth every penny. I don't have a trigger pull gauge,...but it's noticeably lighter.
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Gear box
Purchased this gearbox and attempted to install the in my buckmark but it broke during installation. Contacted Tanderkross and they sent out a new one. Received the new one and installed and the new trigger pull is top notch. Highly recommend
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GearBox for Browning® Buck Mark
It is everything as described! Easy to install, shaved trigger pull wieght and shipping was quick.
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Gearbox for Browning Buck Mark
Extremely easy to install with the Tandem Kross's excellent how-to videos. I'm looking forward to TK's Browning Buckmark flat trigger being back in stock, so I can appreciate the entire trigger upgrade package.
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Gearbox
Trigger pull is down to 2.6 pounds from 4.1 pounds. Very satisfied.
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Gear box
Very easy install.I put the victory trigger in also and it brought the trigger pull to 2.5 lbs
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Buck mark gearbox
Worked as advertised. I now have very crisp 2.1 lb trigger.
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Best solution for trigger pull weight
Had one on my Buckmark for nearly years. Made the OK trigger exceptional. And with the video a rather easy installation. Forget the flip, get a gearbox.
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Talon Extractor
Big improvement in Trigger pressures
