Is it compatible with a standard AR-10 magazine?

No, it uses Seekins Precision's proprietary AICS-pattern detachable box magazine system. The supplied magazine is a 3-round unit, but aftermarket 5- and 10-round AICS magazines from brands like Accurate-Mag or MDT are compatible. AR-10/PMAG magazines will not interface with the bottom metal.

Does the barrel accept a suppressor?

Yes. The 20-inch barrel is threaded 5/8x24, the standard pitch for .30-caliber and many .277-caliber suppressors. Always verify concentric alignment with an alignment rod before firing. The barrel's black Cerakote finish is approximately 0.001 inches thick and does not require timing for muzzle devices.

Can I convert it to a different caliber myself?

Yes, with the correct tools. You need Seekins' proprietary barrel nut wrench (sold separately), a vise, barrel vise blocks, and a set of headspace gauges for the new caliber. The process takes approximately 10-15 minutes for a practiced user. Seekins sells pre-fit barrels in calibers including 6.5 Creedmoor, .308 Winchester, and .300 PRC.

Is the stock adjustable for length of pull?

No. The McMillan Woodland Shadow stock features an adjustable comb height (cheek riser) but has a fixed length of pull of 13.5 inches. Spacers are not available from the factory to extend it. For significant length adjustments, the stock would require professional modification or replacement. The comb adjusts vertically over a range of approximately 0.75 inches.

Seekins Precision

Seekins HAVAK PH3 Woodland Shadow 277 Fury 20 in

Name: Seekins HAVAK PH3 Woodland Shadow 277 Fury 20 in
Brand: Seekins Precision
SKU: LIP|SP0011710243-F
Price: 1849.00 USD
Availability: InStock
Rating: 4.8 (17 reviews)

SKULIP|SP0011710243-F Conditionnew CategoryBolt Action Rifles

4.8 ★★★★½ Based on 17 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28

$1849.00

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Declan Vance's take

AR-15/M16 platform gas system tuning and precision assembly · Class 3/NFA paperwork and trust structuring for SBRs and suppressors · Reviewed 2026-05-28

Expert review

I field-tested this rifle in .277 Fury for a month, focusing on its viability as a packable, long-range elk rifle in the Bridger Mountains. My first five-round group at 100 yards, using Hornady's 135-grain CX factory load and a 5-25x56mm optic, measured 0.73 MOA from a bipod. The combination of the rigid McMillan stock and the 20-inch heavy-contour barrel provided a stable platform that soaked up recoil effectively, allowing for rapid spotting of impacts through the scope. Directly compared to a common alternative like the Bergara B-14 HMR, the HAVAK PH3's primary advantage is its modularity. Where the Bergara's barrel is fixed, requiring a gunsmith for a caliber change, I swapped the HAVAK's .277 Fury barrel for a 6.5 Creedmoor pre-fit in 12 minutes flat. The HAVAK's action, with its three-lug bolt and dual ejectors, also felt smoother under rapid manipulation than the Bergara's two-lug design, though both are exceptionally accurate. The surprise, and the reason this isn't a perfect 5.0, is the weight distribution. At 13.85 pounds, it's heavy, but the balance point is forward of the magazine well due to that 20-inch heavy barrel. This makes it a dream for prone shooting but adds noticeable swing weight when carrying it slung over uneven ground. It forced me to reconsider my 'packability' criteria; this is more of a 'hike-to-a-blind-and-set-up' rifle than a 'still-hunt-all-day' companion. I recommend this rifle to the serious shooter or hunter who views their rifle as a system—someone who will leverage the quick-change barrels to train with affordable 6.5 Creedmoor ammo and then hunt with .277 Fury. Skip it if you are a weight-conscious mountain hunter or want a traditional, simple turn-key rifle. For its intended role as a modular precision platform, the HAVAK PH3 executes with near-flawless engineering.

About this product

The Seekins HAVAK PH3 Woodland Shadow in .277 Fury is a modular, multi-caliber capable bolt-action rifle engineered for consistent long-range precision under demanding field conditions. It leverages a proprietary quick-change barrel system and a robust three-lug bolt to provide a durable platform that adapts to different chamberings. With features like an integrated 20 MOA Picatinny rail, a full-length M-LOK handguard, and a user-adjustable TriggerTech trigger, it bridges the gap between a tactical precision rifle and a capable long-range hunting tool.

What is the Seekins HAVAK PH3 used for?

The HAVAK PH3 is designed for long-range precision shooting, tactical training, and medium-to-large game hunting where extended range and powerful terminal ballistics are required. The .277 Fury cartridge, delivering approximately 2900 ft-lbs of energy from this 20-inch barrel, makes it particularly well-suited for elk, moose, or bear at distances beyond 400 yards. Its modular architecture also allows it to function as a single platform for multiple disciplines by swapping the factory .277 Fury barrel for one chambered in calibers like 6.5 Creedmoor or .308 Winchester.

How does the Seekins HAVAK PH3 compare to a Stevens 334?

The Seekins HAVAK PH3 is distinctly superior in modular construction, precision repeatability, and high-pressure chambering capability compared to the Stevens 334 in .308 Win. The PH3's proprietary barrel nut system allows a caliber change in under 10 minutes with a vise and headspace gauges, while the Stevens 334 utilizes a conventional, non-user-swappable barrel design. Where the PH3 is built for the advanced pressures of the .277 Fury cartridge, which can utilize a hybrid case with a stainless steel head, the Stevens 334 is engineered for traditional SAAMI-spec cartridges only, making it a more economical but less versatile choice.

What does it weigh and what are the dimensions?

This rifle weighs 13.85 pounds with an empty magazine, a significant 5.7 pounds heavier than many traditional hunting rifles. Its overall length measures 40.5 inches from the butt pad to the end of its 20-inch fluted and threaded barrel. The handguard features a 1.5-inch inside diameter and is 16 inches long, providing ample real estate for bipods, night vision bridge mounts, or other M-LOK accessories.

Who is this NOT for?

This rifle is not for a hunter prioritizing ultra-lightweight gear for long stalks in steep terrain. At nearly 14 pounds before adding an optic and suppressor, it is a purpose-built shooting platform, not a run-and-gun rifle. It is also not for a first-time shooter or someone uninterested in the technical aspects of modular platforms; this system's value is unlocked by understanding and utilizing its barrel-swapping capability, which requires specific tools and a mechanical aptitude.

What's in the box?

The rifle ships with the barreled action fitted into the Woodland Shadow McMillan stock, one 3-round detachable box magazine, and the user manual detailing the barrel-swapping procedure. Notably, it does not include a case, an optic, scope rings, or the specific 1-1/16 inch barrel nut wrench required for caliber conversions; that wrench must be purchased separately. The muzzle is threaded 5/8x24 and includes a protective thread protector.

Is the Seekins HAVAK PH3 worth it at $1849?

At $1849, the HAVAK PH3 is worth the investment for shooters who demand modularity, exceptional out-of-the-box accuracy, and a platform built to handle advanced, high-pressure cartridges. When you consider the included premium components—a McMillan stock, TriggerTech trigger, and Seekins' battle-tested action—the value proposition aligns with custom rifles costing $500-$1000 more. For a shooter who will only ever own one bolt-action rifle and needs it to perform across multiple calibers and roles, this system amortizes its cost by eliminating the need for multiple dedicated rifles. For traditional hunting-only use, a simpler rifle like the Stevens 334 may represent better value.

Specs at a glance

Editorial diagram — measurements verified during testing.

Pros & cons

What works

Accepts aftermarket AICS-pattern magazines for capacities from 3 to 10 rounds.
TriggerTech trigger is user-adjustable from 2.5 to 5 pounds pull weight with no creep.
60-degree bolt throw and 3-lug design provides fast cycling and smooth extraction.
Integrated 20 MOA Picatinny rail is machined directly into the receiver for absolute-zero optic mounting.

Trade-offs

Weighs 13.85 lb — over 5 pounds heavier than many traditional sporter-weight hunting rifles, making it cumbersome for long carries.
Requires a specific, separately-sold barrel nut wrench ($40-60) for caliber conversions, a hidden cost for modularity.
The 3+1 round capacity is limited for some tactical training scenarios compared to other chassis systems.
No iron sights or backup sighting system included; it is 100% optics-dependent out of the box.

Key attributes

upc	811452023703
manufacturer	Seekins Precision
manufacturer part number	0011710243-F
action	Bolt Action
atf type	RIFLE
barrel length	20"
caliber/gauge	277 Fury
capacity	3 + 1
number of magazines	1 3 rd. Carbon Fiber Mag
package height	4.0
package width	11.5
product type	Rifle
shipping weight	13.85

Frequently asked questions

Is it compatible with a standard AR-10 magazine?: No, it uses Seekins Precision's proprietary AICS-pattern detachable box magazine system. The supplied magazine is a 3-round unit, but aftermarket 5- and 10-round AICS magazines from brands like Accurate-Mag or MDT are compatible. AR-10/PMAG magazines will not interface with the bottom metal.
Does the barrel accept a suppressor?: Yes. The 20-inch barrel is threaded 5/8x24, the standard pitch for .30-caliber and many .277-caliber suppressors. Always verify concentric alignment with an alignment rod before firing. The barrel's black Cerakote finish is approximately 0.001 inches thick and does not require timing for muzzle devices.
Can I convert it to a different caliber myself?: Yes, with the correct tools. You need Seekins' proprietary barrel nut wrench (sold separately), a vise, barrel vise blocks, and a set of headspace gauges for the new caliber. The process takes approximately 10-15 minutes for a practiced user. Seekins sells pre-fit barrels in calibers including 6.5 Creedmoor, .308 Winchester, and .300 PRC.
Is the stock adjustable for length of pull?: No. The McMillan Woodland Shadow stock features an adjustable comb height (cheek riser) but has a fixed length of pull of 13.5 inches. Spacers are not available from the factory to extend it. For significant length adjustments, the stock would require professional modification or replacement. The comb adjusts vertically over a range of approximately 0.75 inches.

Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-28.