IWI Zion-25 .308 Win 16.5in Threaded 20+1 15in M-LOK
Specs at a glance
About this product
Compact .308 Win semi-auto rifle with a 16.5-inch nitride barrel, Timney two-stage trigger, and 15-inch M-LOK handguard with integrated ARCA rail. Built for duty-grade reliability by IWI US.
Nationwide shipping. Order from anywhere in the US.
The IWI Zion-25 .308 Win 16.5in Threaded 20+1 15in M-LOK is a compact large-frame semi-automatic rifle built for duty-grade reliability and precision. Chambered in .308/7.62 NATO, it features a nitride-treated heavy profile barrel and a 15-inch free-float M-LOK handguard with an integrated ARCA rail section. Ergonomics are anchored by Bravo Company B5 furniture and a Timney two-stage trigger. Assembled in the United States by IWI US, this rifle delivers a balance of power and maneuverability that serious shooters demand.
| Manufacturer | IWI US |
|---|---|
| Model | Zion-25 |
| Material | 7075-T6 aluminum upper/lower receiver, 4140 steel barrel (per manufacturer specs) |
| Compatibility | .308 Win / 7.62 NATO |
| Finish | Nitride-treated barrel, hardcoat anodized receivers |
| Weight | 8.5 lbs (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- 16.5-inch Nitride-Treated Heavy Barrel: The shorter barrel reduces overall length for close-quarters handling while maintaining the ballistic performance of .308 Win. The 1:10 twist rate stabilizes common bullet weights from 150 to 175 grains reliably.
- 15-inch Free-Float M-LOK Handguard with ARCA Rail: The free-float design improves accuracy by eliminating barrel pressure from accessories. The integrated ARCA section allows direct mounting of tripods and sleds without adapters.
- Timney Two-Stage Trigger: A crisp, predictable break at approximately 4.5 pounds enhances shot-to-shot consistency. Two-stage triggers are favored by precision shooters for their distinct take-up and wall.
- Bravo Company B5 Furniture: The stock and grip offer a proven ergonomic profile with a non-slip texture. The stock includes a friction lock system to minimize wobble during rapid fire.
- 20+1 Round Magazine Capacity: The included magazine provides substantial firepower for defensive or competition use. The 20-round capacity balances reload speed with magazine length for prone shooting.
Who It’s For
The IWI Zion-25 is designed for the shooter who needs a compact .308 platform without sacrificing accuracy. It suits law enforcement professionals, competition shooters in tactical rifle divisions, and hunters who work in brush or vehicle-based scenarios. Collectors will appreciate the U.S. assembly and the blend of Israeli engineering with American components.
Pros and Cons
- Pros: Compact profile for a .308; Timney trigger out of the box; ARCA rail integrated into handguard; nitride barrel for longevity and corrosion resistance; 20-round magazine capacity.
- Cons: The 16.5-inch barrel reduces muzzle velocity compared to 18- or 20-inch barrels, which may affect long-range ballistic performance beyond 800 yards. The rifle is also heavier than some competing AR-10 platforms, partly due to the heavy-profile barrel.
Comparison
| Feature | IWI Zion-25 | Geissele Automatics Super Duty .308 | Lone Wolf Distributors G-Series .308 |
|---|---|---|---|
| Barrel Length | 16.5 in | 16 in | 18 in |
| Twist Rate | 1:10 | 1:10 | 1:10 |
| Trigger | Timney two-stage | Geissele SSA-E two-stage | Mil-spec single-stage |
| Handguard | 15 in M-LOK with ARCA | 15 in M-LOK | 15 in M-LOK |
| Weight | 8.5 lbs | 8.9 lbs | 8.2 lbs |
| Price | $1,820.51 | $2,399.00 | $1,499.00 |
FAQ
What is the twist rate of the IWI Zion-25 barrel?
The barrel uses a 1:10 twist rate, which stabilizes standard .308 Win and 7.62 NATO ammunition from 150 to 175 grains. Heavier match bullets up to 185 grains may also perform well, but 168-175 grain loads are optimal for precision.
Is the IWI Zion-25 compatible with standard AR-10 parts?
Yes, the rifle uses a DPMS-pattern AR-10 lower receiver, which accepts most aftermarket triggers, grips, and stocks. The upper receiver is also DPMS-pattern for handguard compatibility. However, barrel and bolt carrier groups should be specific to the .308 DPMS platform.
Does the IWI Zion-25 come with a muzzle device?
Yes, the 16.5-inch barrel is threaded 5/8×24 and ships with a standard A2-style flash hider. The threads allow easy installation of suppressors or compensators.
What materials are used in the receiver and barrel?
The upper and lower receivers are machined from 7075-T6 aluminum for strength and light weight. The barrel is 4140 steel with a nitride treatment for corrosion resistance and extended service life.
Ready to Order
The IWI Zion-25 .308 Win 16.5in Threaded 20+1 15in M-LOK delivers a compact, accurate large-frame rifle for shooters who demand reliability. According to IWI US, each rifle is assembled in the United States and undergoes a function-check before shipping. According to industry data, the AR-10 platform accounts for approximately 15% of the semi-auto rifle market, and the Zion-25 represents a strong value in that segment. Last updated: April 2026.
- ✓ Nationwide delivery (all 50 states)
- ✓ Ships 1-2 business days
- ✓ 30-day returns
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