"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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Gear Box
Super easy to install it dropped the trigger pull about a pound and a half. Haven't been able to shoot it yet
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Gear Box
Used the Gear Box to replace the weak spring in my Buckmark. Works great. Resultant trigger pull similar to the "spring flip" method. Easy to install.
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buckmark gearbox
great product, easy to install. fantastic service
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A MUST
My Buckmark has a great trigger out of the box but this makes it even better. Easy to install. It is also priced right and glad I ordered it.
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Gearbox for Buckmark
Fairly easy install. Trigger now at 3 1/2lbs
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Gearbox
A friend gave me a Gearbox for my Browning Buckmark. I used Tandem Kross video to install it. The video was great and installation was a breeze. The results were outstanding with a crisper and lighter trigger pull. I immediately ordered another one for my other Buckmark. Shipping and service was quick.
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Gearbox
The gear box is a great design, easy to install. I don't have a gauge to test trigger pull but by feel it did lower the pull I would like it lighter but for the cost and ease of installing it was well worth it
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TandemKross GearBox
The GearBox was easy to install on my Buck Mark Camper. It reduced the trigger pull by at least 1 lb. which has helped bring down the group size on my targets. I'm happy with it.
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Shadow mount
Easy to install. Works great.
