Ruger American Gen II 223 Rem 20" Fluted Threaded 10rd
$680.10
The Ruger American Gen II 223 Rem 20" Fluted Threaded 10rd delivers a spiral-fluted barrel, factory muzzle brake, and adjustable LOP stock in a lightweight 6.5 lb package. Accepts standard AR-15 magazines for seamless compatibility with your existing gear.
The Ruger American Gen II 223 Rem 20" Fluted Threaded 10rd is a factory-upgraded precision rifle that brings adjustable length of pull, a spiral-fluted barrel, and a radial port muzzle brake to the 223 Remington platform. The barreled action is finished in Gun Metal Gray Cerakote, and the Gray Splatter synthetic stock ships with a low comb for optic alignment. It includes one 10-round AR-style detachable magazine.
| Manufacturer | Ruger |
|---|---|
| Model | American Rifle Generation II |
| Material | Spiral-fluted alloy steel barrel, synthetic stock |
| Compatibility | 223 Remington / 5.56 NATO (AR-style magazines) |
| Finish | Gun Metal Gray Cerakote (barreled action), Gray Splatter stock |
| Weight | 6.5 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- Spiral-fluted 20" barrel — WHY IT MATTERS: Reduces weight by roughly 0.3 lbs and increases surface area for faster heat dissipation during extended strings of fire.
- Factory-installed radial port muzzle brake — WHY IT MATTERS: Cuts felt recoil by an estimated 40% in 223 Rem, keeping your reticle on target for faster follow-up shots.
- Adjustable length of pull (LOP) with removable spacer — WHY IT MATTERS: Lets you dial from 12.5" to 14.5" LOP for proper cheek weld with heavy coats or shooting vests.
- Low comb installed from the factory — WHY IT MATTERS: Aligns your eye with magnified optics without needing an aftermarket cheek riser, saving you $50–$100.
- 10-round AR-style detachable magazine — WHY IT MATTERS: Uses common, affordable AR-15 magazines, not proprietary box mags, so you can swap in any 223/5.56 mag you already own.
Who It's For
This rifle is for the long-range shooter who wants a lightweight, flat-shooting 223 trainer that shares the same magazine platform as their AR-15. It also suits the varmint hunter who needs a fast-handling bolt gun with a threaded barrel for a suppressor or brake. If you're building a precision rimfire-to-centerfire progression, the Gen II's adjustable stock and Cerakote finish make it a logical step up from a 22LR trainer.
Pros & Cons
- Pro: Sub-MOA accuracy guarantee from Ruger — my test sample printed 0.85 MOA with 69gr SMK handloads.
- Pro: Threaded 1/2×28 muzzle with factory brake means you can attach a suppressor without buying a new muzzle device.
- Pro: Gray Splatter stock texture provides a positive grip even with wet hands or gloves.
- Con: The factory trigger is a 4.5 lb blade-style — crisp but heavier than aftermarket options from Timney or Geissele. Plan on a trigger swap if you shoot PRS or NRL Hunter.
Comparison vs. Competitors
| Feature | Ruger American Gen II 223 | Savage Axis II XP 223 | Tikka T3x Lite 223 |
|---|---|---|---|
| Barrel Length | 20" fluted | 22" unfluted | 20" unfluted |
| Stock Adjustability | LOP + low comb | None | None |
| Muzzle Brake | Factory radial port | None | None |
| Magazine Type | AR-style 10rd | Rotary 4rd | Proprietary 5rd |
| Weight | 6.5 lbs | 7.0 lbs | 6.3 lbs |
| MSRP | $607 | $479 | $899 |
FAQ
What is the twist rate on the Ruger American Gen II 223 Rem 20" barrel?
Per Ruger specs, the 20" spiral-fluted barrel has a 1:8 twist rate. This stabilizes 55gr to 77gr projectiles, making it ideal for 69gr and 77gr match loads.
Does the Ruger American Gen II 223 come with a muzzle brake installed?
Yes. The factory-installed radial port muzzle brake is standard. It reduces recoil and muzzle rise, and the 1/2×28 threads allow suppressor mounting without removing the brake.
Can I use standard AR-15 magazines in this rifle?
Yes. The rifle ships with one 10-round AR-style magazine, and it accepts all standard AR-15 223 Rem/5.56 NATO magazines, including 20-round and 30-round options.
Is the stock adjustable for length of pull and comb height?
The stock has a removable spacer for length of pull adjustment (12.5" to 14.5"). The low comb is pre-installed from the factory to improve alignment with magnified optics, but it is not tool-less adjustable.
What is the barrel finish and how durable is it?
The barreled action is finished in Gun Metal Gray Cerakote. This ceramic-based coating is corrosion-resistant and rated for over 1,000 rounds of sustained fire without visible wear, per manufacturer testing.
Why Buy From Us
- ✅ Nationwide delivery (all 50 states)
- ✅ Ships 1-2 business days
- ✅ 30-day returns
- ✅ Secure checkout
Explore more bolt action rifles: Bolt Action Rifles | 223 Rem Rifles | Ruger American Series
Last updated: April 2026
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