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Questions & Answers
Customer Reviews
Most Recent Reviews Heavy pull! No good. by CR, Verified Owner, November 4, 2024
$30 for a spring that feels as bad as stock is an absolute waste of money for a Buckmark. Do a Heggis spring flip instead. It's free and it's better anyway.
0/1 found this helpful
Most Recent Reviews Great add on by Randy Fulks, Verified Owner, February 2, 2025
If you follow the online video, it's pretty easy to install. I was hoping for a little less trigger pull. I have only shot 10 rounds, but so far, I am pleasantly surprised at the difference in trigger pull. It's a little on the pricey side, but it's...
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Most Recent Reviews Great product by Jo, Verified Owner, December 22, 2024
Very nice upgrade I would definitely buy this again
Most Recent Reviews Great improvement by Joseph S., Verified Owner, September 19, 2024
Installation is a breeze. This took my Buckmark down to 2 lbs 2 oz. I also installed the tandemkross trigger. I don’t know if it contributed to the final trigger pull as I installed both at the same time. Jury is still out on the trigger but the g...
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Read All 4 Reviews
Color: Black Gun Make: Browning Gun Model: Browning Buck Mark

Code: 3GZ-PDC-BOBM-TK12N0317BLK1

MPN: TK12N0317BLK1

UPC: 769498483640

List: $29.99Save $2.40
$27.59

Product Info for TANDEMKROSS GearBox Replacement Sear Spring

The Browning Buck Mark has a great trigger right out of the box. But if youre like many Browning Buck Mark owners, youve likely researched ways to lower the guns trigger pull weight and adjust the feel even further.image

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."

Specifications for TANDEMKROSS GearBox Replacement Sear Spring:

Manufacturer: TANDEMKROSS
Color: Black
Finish: Polymer
Gun Make: Browning
Gun Model: Browning Buck Mark

Features of TANDEMKROSS GearBox Replacement Sear Spring

  • 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!

Package Contents:

  • TANDEMKROSS GearBox Replacement Sear Spring

TANDEMKROSS GearBox Replacement Sear Spring Orderable Models

List of Orderable Models

TANDEMKROSS GearBox Replacement Sear Spring, Browning Buck Mark, TK12N0317BLK1 , MPN: TK12N0317BLK1 , UPC: 769498483640 , Code: 3GZ-PDC-BOBM-TK12N0317BLK1
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