Description
The Bond Arms Cyclops 50 AE Stainless is a single-barrel, single-shot big bore handgun built on the Bond Arms Cyclops frame. It fires the 50 Action Express from a 4.25-inch barrel, wears B6 resin extended grips and is made of bead-blasted matte stainless steel in Granbury, Texas.

Bond Arms Cyclops 50 AE Stainless Overview
Bond Arms calls this model the Cyclops 50 AE Thumper, part BACY-50AE. Unlike classic two-barrel Bond derringers, the Cyclops uses one heavier barrel on a dedicated frame to handle magnum pressures. It is a single-action design: cock the hammer for each shot. The barrel is 4.25 inches, overall length is 6.75 inches and listed weight is 28 ounces. Sights are a front blade with a fixed rear, the extended B6 resin grips give you a full hand on the frame, and a cross-bolt safety blocks the hammer when engaged.
The 50 Action Express
The 50 AE was developed for the Desert Eagle pistol and launches 300 to 350 grain bullets with enormous energy for a handgun cartridge. In a 28-ounce single-shot, that means stout recoil and a large fireball. Factory ammunition is available from Hornady, Speer and a few specialty makers, but it is expensive, often several dollars per round, so most owners shoot it in small doses.

How the Cyclops Works
The barrel tips up for loading after you press the release lever. Insert one cartridge, close the barrel, cock the hammer and fire. Extraction is manual. Because there is only one shot, the Cyclops is best viewed as a conversation piece, a backup on hunting trips, or a hard-hitting novelty for range days rather than a primary defensive handgun.
Build Quality
Bond Arms machines its frames and barrels from stainless steel and is known for tight fit and finish. The bead-blasted matte surface hides fingerprints and resists rust. The B6 grips fill the hand better than standard derringer grips, which matters a great deal when controlling 50 AE recoil.

Carry and Holsters
At 6.75 inches long and 28 ounces, the Cyclops is compact but heavy for its size. Bond Arms sells holsters made for its frames, and generic derringer holsters often will not fit the larger Cyclops barrel, so plan on a dedicated holster if you intend to carry it.
Honest Caveats
Recoil is severe and accuracy beyond short range is limited by the short sight radius and heavy trigger typical of single-action derringer-style guns. Never carry it with the hammer cocked. Ammunition cost and availability are real limits. If you want a practical carry gun, a semi-automatic pistol is a better choice; buy the Cyclops because you want a unique big bore.
State Laws and Ownership
Handgun laws vary widely. Some states require permits to purchase, maintain approved handgun rosters, or regulate single-shot pistols differently; California and Massachusetts in particular restrict which models can be sold. Check your state and local laws before ordering. Handguns ship only to a licensed dealer in your state of residence.
Specifications
- Manufacturer: Bond Arms
- Model: Cyclops 50 AE Thumper, part BACY-50AE
- UPC: 855959007590
- Caliber: 50 Action Express
- Action: Single action, single shot, tip-up barrel
- Barrel: 4.25 in.
- Frame and finish: Stainless steel, bead-blasted matte
- Grips: B6 resin, extended
- Sights: Front blade, fixed rear
- Safety: Cross-bolt hammer block
- Overall length: 6.75 in.
- Weight: 28 oz
Before You Buy
Federal law requires handgun buyers to be at least 21 years old to purchase from a licensed dealer and to pass an NICS background check. This handgun ships to your local FFL, where you complete ATF Form 4473 before pickup. State and local rules may add permits or waiting periods.
Who It Is For
The Bond Arms Cyclops 50 AE Stainless is a great fit for collectors and big bore enthusiasts who want a well-made, one-of-a-kind 50 AE handgun.
Buy the Bond Arms Cyclops 50 AE Stainless at MAG5 Firearms
MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the Bond Arms Cyclops 50 AE Stainless online and ship it to your local FFL dealer, or browse our full selection of firearms for more handguns. For factory details, visit Bond Arms.








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