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Bond Arms built the Cyclops platform from the ground up to handle serious cartridges, and this accessory barrel lets you convert your frame to fire the legendary .45-70 Government. The bare left side of the barrel and plain muzzle give you a clean slate for custom engraving or leave it minimalist if you prefer.
One of the biggest draws to the Cyclops system is how stupid simple the barrel swap is. You just pop out a single hinge pin, pull off the old barrel, drop the new one in, and pin it back together. No special tools needed. This rough-finished stainless steel barrel matches the same texture as other Rough Series components, so it'll look right at home on your frame whether you already have a Cyclops platform or are building one out.
Bond Arms designed the Cyclops as a dedicated single-shot platform specifically because the .45-70 cartridge needed special handling. The company actually tested big-bore double-barrel configurations and ran into real problems with recoil making the rebounding hammer drop on the second barrel. Going single-shot solved that entirely. The solid stainless steel fill-in where a second barrel would normally be adds serious weight up front, and that extra mass directly helps manage the substantial recoil this cartridge produces. The barrel is bored out solid to contribute to that weight, making the 4.25-inch length work harder at taming felt recoil compared to a lighter, traditional construction.
This barrel does not feature an extractor, which means you open the action with the left-side barrel release lever and remove spent cases by hand. Most standard .45-70 cases come out without drama, but heavier or hotter loads can stick due to heat expansion. Bond Arms recommends keeping velocities under 1,500 fps for the smoothest experience. Subsonic and lighter-pressure rounds like Hornady SUB-X ammo tend to cycle cleanly and give the best shootability balance from the 4.25-inch tube. This is a rough-finished barrel only, so it pairs with rough-finished Cyclops frames. Rough series barrels come engraved on both sides and at the muzzle per Bond Arms standard practices.
No. This Cyclops barrel only works with the Cyclops frame and is not compatible with Bond Arms' Hand Cannon, Stinger, or Stinger RS models. Each Bond Arms platform uses frame-specific barrels, so make sure you have a Cyclops frame before ordering.
Bond Arms recommends keeping .45-70 loads under 1,500 fps muzzle velocity in the Cyclops. Subsonic and reduced-power rounds like Hornady SUB-X give the best balance of shootability and consistency. Heavier, hotter loads like Buffalo Bore hard-cast ammunition will function mechanically but produce extremely punishing recoil in such a compact package.
It's a single-pin operation. Simply push out the hinge pin holding the barrel assembly, remove the old barrel, drop in the new one, and reinstall the pin. No specialized tools are needed. The entire process takes about 30 seconds once you've done it once.
Yes, that's exactly why Bond Arms left the left side plain. The bare stainless provides a clean slate if you want to add custom engraving. You can also leave it as-is for a minimalist appearance. The barrel does come engraved on the right side and muzzle per Bond Arms standard finish specifications.
| UPC | 855959008023 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CYBL-425-45-70-RS |
| Shipping Weight | 0.5 |
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