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Bighorn Arms

Zermatt Arms TL3 Long Action (DLC Coated)

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Bighorn TL3 actions are the next generation of products from the superb Bighorn Arms lineup. Beginning as an evolution of the Bighorn TL2, the Bighorn TL3 action retains the ultra-repeatable, beautifully machined quality that shooters became accustomed to with the earlier TL and TL2 versions. In addition to this, the TL3 also comes with the added benefits of:

1. Controlled Feed 

2. Mechanical Ejection 

3. Pinned 20 MOA Picatinney Rail 

4. Medium Tang

5. Competition Bolt Knob 

6. Wider Ejection Port 

7. Same Bighorn Arms Floating Bolt head capability of switcing calibers 

8. Bayonet Style Bolt Shroud for easy take down

9. Accepts AICS style Magazines

10. DLC Coated Receiver & Black Nitrided Bolt



*This item must be shipped to your local licensed FFL dealer. Please email a copy of your dealer's FFL info to


All ATF serialized items (such as actions, suppressors, and barreled actions) will ship UPS Ground with signature required. Please contact us is you need expedited shipping instead.

1 Review

  • 5
    Bighorn TL3 Long Action

    Posted by J. Adams on Jul 20th 2020

    I was looking for my first custom action to build a long range rifle from. The Team at ALTUS Shooting really took the time to go over all the options. I ended up with the TL3 for its Control Round Feed. The fit and finish of these receivers is everything that I've been told. I was concerned with the rail not being "One-Piece" with the receiver but the Pins are so precise, that you don't even need the (4) rail screws to hold it in place. My rifle is not complete at this time, but I'm enjoying cycling the bolt and dry firing. Once my barrel arrives I'll get the chance to put it all into use.