Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms and accessories. The Century Arms Centurion OPTIO-I 12 Gauge AR-12 Semi-Automatic Shotgun is a reliable, gas-operated shotgun with a 5-round capacity and Picatinny rail for optics. Built for durability and performance at an accessible price point. In stock now for $450.00 with same-day shipping available.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
| Product Type | Semi-Automatic Shotgun |
|---|---|
| Gauge | 12 |
| Capacity | 5 rounds |
| Barrel Length | 18.5″ |
| Overall Length | 37″ |
| Weight | 7.5 lbs |
| Action | Gas-operated |
| Finish | Black oxide |
| Stock | Adjustable synthetic |
| Rail | Picatinny top rail |
| Country of Origin | Turkey |
| SKU | CA-AR12 |
Key Features
- Gas-operated system reduces recoil for faster follow-up shots
- Adjustable stock fits shooters of different sizes
- Picatinny rail allows for optic mounting
- Chrome-lined barrel for increased durability
- Ambidextrous safety
Pros & Cons
- ✅ Affordable entry into semi-auto shotguns
- ✅ Reliable gas-operated system
- ✅ Picatinny rail for optics
- ✅ Adjustable stock
- ✅ Chrome-lined barrel
- ❌ Limited aftermarket support compared to AR-style shotguns
- ❌ Heavier than some competing models
Who Should Buy This Shotgun
Buy it if: You want a reliable semi-auto shotgun for home defense or range use at a reasonable price point.
Skip it if: You need extensive aftermarket customization options or prefer a lighter shotgun for hunting. See our other shotguns for alternatives.
Frequently Asked Questions
Where can I buy the Century Arms Centurion OPTIO-I shotgun online?
Available at Kansas Gunshop (kansas-gunshop.com) with same-day shipping from Wichita, KS.
What type of ammunition does this shotgun use?
The OPTIO-I is chambered for 12 gauge 2-3/4″ and 3″ shells.
Is this shotgun suitable for home defense?
Yes, its semi-automatic action and 18.5″ barrel make it a good option for home defense.
Can I mount a red dot sight on this shotgun?
Yes, the Picatinny rail allows for optic mounting.
What’s the warranty on this firearm?
Century Arms provides a limited lifetime warranty to the original purchaser.
✅ Same-day shipping from Wichita, KS
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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