Sig Sauer Cross STX Rifle .308 Win 10rd Magazine 20" 5/8x24 Threaded Barrel Black

The Sig Sauer Cross STX rifle in .308 Win is a modern bolt-action platform built for shooters who demand precision and speed at distance. This .308 Win rifle combines tactical efficiency with lightweight design—engineered to appeal to long-range hunters and competition shooters who won't compromise on performance. With a 20-inch heavy barrel, precision trigger, and full-length Picatinny rail, the Cross STX handles the demands of extended-range work while keeping total weight down to a practical 7.7 pounds.

The Cross STX philosophy centers on speed without sacrifice. The 2-stage match trigger breaks clean and predictably, the AICS-pattern magazine well accepts the included 10-round polymer magazine, and external paddle magazine release puts fast reloads within natural reach. AR-style ergonomics and controls mean shooters familiar with the platform's safety lever and grip transition quickly. The folding adjustable precision stock adjusts to your body and shooting position, and folds to a compact 30 inches for transport or tight spaces—a feature that matters when you're hunting remote terrain or heading to the line.

Build quality reflects Sig's attention to the details that matter. The stainless steel barrel is 5/8×24 threaded and ready for your choice of suppressor or muzzle device—the factory flash hider can come off in seconds. A free-floating M-LOK handguard keeps the barrel consistently supported, and the full-length 20 MOA top rail gives you the mounting foundation for high-power glass without hunting for real estate. The right-side thumb rest safety lever lets you manage the action without shifting your grip, and anodized receiver finish takes the knocks of field use.

Built by shooters, for shooters—the Cross STX earns its place in a working rifle safe whether your mission is whitetail at 400 yards, precision plate shooting, or long-range hunting in thin country.

Key Features

• 20-inch heavy stainless steel barrel, 5/8×24 threaded for suppressors and muzzle devices
• 2-stage match trigger with curved shoe for predictable break and reset
• Free-floating M-LOK handguard with full-length 20 MOA Picatinny top rail
• External paddle magazine release for fast reloads and natural hand position
• Folding adjustable precision stock: 41.5 inches extended, 30 inches folded for transport
• AR-style controls and ergonomics with right-side thumb rest safety lever
• PRS-style polymer grip for consistent hand position
• AICS-pattern magazine well; includes one 10-round polymer magazine
• Lightweight at 7.7 pounds—practical for hunting and long-distance field work
• Anodized receiver finish for durability in harsh conditions

Specifications

Frequently Asked Questions

What suppressor or muzzle devices will fit the Cross STX?

The 20-inch barrel is threaded 5/8×24, the standard thread pitch for .308 Winchester suppressors and muzzle devices. You can attach any quality suppressor or flash hider with 5/8×24 threading. The rifle ships with a factory flash hider; you can remove it and thread on a suppressor or other muzzle device in seconds.

Is the Cross STX good for hunting and long-range shooting?

Yes. The .308 Win platform is proven for hunting medium and large game out to practical hunting distances, and the match-grade trigger, precision stock, and 20 MOA top rail support serious long-range accuracy work. At 7.7 pounds and with a folding stock, it's light and compact enough for backcountry hunting while rigid enough for precision shooting at the range.

What's included in the box?

The rifle comes with one 10-round polymer magazine and the factory flash hider installed on the barrel. The folding stock is attached and ready to use.

Will the Cross STX work with standard AR-15 magazines?

No. The Cross STX uses AICS-pattern magazines, which are standard for many modern bolt-action rifles but are not compatible with AR-15 magazines. The included 10-round polymer magazine is AICS-pattern.

Can I adjust the stock and safety for left-handed shooting?

The stock is adjustable for length and comb height to fit your body. The thumb rest safety lever is positioned on the right side. Check with Sig Sauer directly about left-handed safety options for this model.