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The Bond Arms Cyclops accessory barrel is purpose-built for owners who want to expand their big-bore handgun options without buying a whole new gun. Drop it into your existing Cyclops frame by removing and replacing a single hinge pin. That's it. You're ready to sling 45-70 Government rounds from a compact, 4.25-inch platform.
This barrel ships with a polished satin finish that pairs cleanly with Cyclops frames of either finish style. Unlike the complete Cyclops pistol, this barrel comes without decorative laser engraving on the left side or muzzle, giving you a clean slate. Some owners appreciate the minimalist look. Others use this as a blank canvas for custom engraving if they want to personalize it.
The beauty of owning a Cyclops frame is exactly this kind of modularity. The 45-70 Government is a rifle cartridge, and fitting one into a compact handgun requires engineering that Bond Arms took seriously. The barrel is solid stainless steel with a bored-out chamber that adds weight and helps manage the cartridge's substantial recoil. That extra mass genuinely helps when you're running rifle rounds through a pocket-sized pistol.
The satin finish is a high-polish option that resists corrosion and looks sharp without the theatrics. It's straightforward stainless steel that will hold up to years of use and handling. The barrel maintains the same exterior dimensions as the complete Cyclops pistol, so holster compatibility stays consistent across your platform.
Remember that Cyclops barrels don't feature an extractor, which means spent cases come out by hand after you flip open the action. Bond Arms engineered this intentionally for durability with big-bore loads. It's a minor trade-off that matters if you're running subsonic 45-70 rounds or conservative loads under 1,500 fps.
Installation takes seconds. You simply remove the single hinge pin that holds your current barrel to the frame, lift out the old barrel, slide in the new one, and reinstall the hinge pin. No gunsmithing or special tools needed. This is one of the main advantages of the Cyclops platform's design.
The satin finish is a high-polish option, so it's brighter and shinier than the matte Rough Series look. If you want a perfect visual match, Bond Arms also makes this barrel in Rough Series finish with a bead-blasted texture. Either will function identically on your frame.
Bond Arms recommends loads with muzzle velocities under 1,500 fps. Subsonic and lower-pressure 45-70 rounds like Hornady SUB-X loads are widely considered the most manageable and give the best balance of shootability and performance out of the 4.25-inch barrel. Hotter loads will fire fine but produce genuinely brutal recoil in a gun this compact.
No. Cyclops barrels are exclusive to the Cyclops frame and won't fit Hand Cannon, Stinger, or Stinger RS models. Bond Arms designed the Cyclops as its own dedicated platform because the 45-70 requires different frame geometry and reinforcement than their other derringers.
| UPC | 855959002045 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CYBL-425-45-70 |
| Shipping Weight | 0.856 |
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