Seekins Precision 0011710253-F Havak PH3 7mm Rem Mag 22" Black Fluted Threaded Barrel, Black Picatinny Rail Steel Receiver, Adj Cheek Riser Urban Shadow Synthetic Stock

The Seekins Precision Havak PH3 in 7mm Rem Mag is a purpose-built rifle for hunters and long-range shooters who demand precision, reliability, and the ability to adapt. Built on Seekins' proven 3-lug action with a smooth 60-degree bolt throw, the PH3 pairs a 22-inch 416R stainless steel barrel with an integrated 20 MOA Picatinny rail and full-length M-Lok rail, giving you a solid platform for mounting glass and accessories right out of the box. The fluted barrel reduces weight while the threaded muzzle (5/8x24) opens the door to suppressors and muzzle devices. This isn't a rifle that forces you into one setup—it's engineered for customization.

What sets the PH3 apart is its commitment to user control. The Trigger Tech trigger adjusts from 2.5 to 5 pounds, so you dial in exactly the break you want. The adjustable cheek riser lets you achieve consistent eye relief with your scope, whether you're prone on the bench or shooting from a hunting position. The toolless, removable bolt means you can switch calibers, perform maintenance, and customize the action without gunsmithing—Seekins' quick-change barrel system is already integrated into the rifle. The Urban Shadow synthetic stock is durable and lightweight, built to handle field conditions without the noise or weight penalty of wood.

This is a magnum-chambered rifle built with magnum-caliber support in mind. The 7mm Rem Mag delivers the velocity and energy needed for medium to long-range game and target shooting, and the PH3 action is engineered to handle it reliably. The M3 chassis and Seekins Mini Chassis are compatible with the PH3 action, giving you a clear upgrade path if your mission changes. Whether you're setting up a dedicated hunting rifle, a precision range gun, or something in between, the Havak PH3 gives you the foundation and flexibility to build it your way.

Key Features

• 3-lug action with 60-degree bolt throw for smooth, fast cycling
• Toolless removable bolt for quick caliber changes and field maintenance
• Integrated 20 MOA Picatinny rail and full-length M-Lok rail for accessory mounting
• 22-inch fluted 416R stainless steel barrel with 5/8x24 threaded muzzle
• Trigger Tech user-adjustable trigger (2.5–5 lb range)
• Adjustable cheek riser for consistent sight picture and eye relief
• Urban Shadow synthetic stock—lightweight and durable
• Compatible with Seekins M3 Chassis and Seekins Mini Chassis
• Quick-change barrel system with open-source headspace and tenon specifications

Specifications

Frequently Asked Questions

Can I change calibers on the Havak PH3?

Yes. The PH3 features Seekins' quick-change barrel system with open-source headspace and tenon specifications. The removable 3-lug bolt is toolless, so you can swap barrels and reconfigure without sending the rifle to a gunsmith. Keep in mind the bolt shown is designed for magnum cartridges; verify compatibility if you plan to shoot standard-length rounds.

What's the difference between the PH3 and the Seekins M3 Chassis?

The Havak PH3 is a complete, ready-to-shoot rifle built around the PH3 action. The M3 Chassis is an aftermarket modular chassis system; the PH3 action is compatible with it, meaning you could migrate your PH3 barreled action into an M3 Chassis setup down the road if you want to experiment with different stock geometries or configurations.

Is the barrel threaded, and what suppressor mount does it use?

Yes, the barrel is threaded 5/8x24, a standard magnum muzzle thread. You'll need a suppressor or muzzle device with 5/8x24 female threads. Confirm your specific suppressor's compatibility before purchase.

What's included in the box?

You receive the complete rifle as configured: PH3 action with the integrated 20 MOA rail and M-Lok rail, 22-inch fluted barrel with threaded muzzle, Urban Shadow synthetic stock with adjustable cheek riser, and the Trigger Tech trigger. Refer to the product documentation for any additional accessories or manual included.