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The Sig Cross is already a slick, take-down bolt gun, and Proof Research built this 16-inch pre-fit barrel to make it even lighter and easier to live with. It's a carbon fiber wrapped .308 Winchester tube chambered and threaded to bolt right onto your Cross, which means you get Proof's match-grade accuracy without shipping your rifle off or paying for shop time. For anyone who bought a Cross to hunt hard or run it fast on the range, this is the kind of upgrade that pays off every time you pick the rifle up.
Proof's carbon fiber barrels run up to 64 percent lighter than a traditional steel barrel of similar contour, and you feel every bit of that at the muzzle. Less weight out front means quicker target transitions, less fatigue on long walks, and a rifle that just points better. The carbon wrap also does a real job managing heat, dissipating it faster so the barrel stays cooler and holds its zero through longer strings. Underneath the wrap is a genuine match-grade steel core, so you're not trading accuracy for the weight savings.
This is where the pre-fit design earns its keep. The barrel ships with the barrel extension already fitted, so it's chambered and headspaced to swap onto the Cross with just a few basic tools. Torque it on, verify headspace with proper go/no-go gauges, and you're ready to sight in. Folks running these report getting zeroed in the first few shots and swapping barrels in their own shop instead of waiting on a gunsmith.
The 16-inch length keeps the rifle compact and quick, and the 1:10 twist with 5-groove rifling stabilizes the common .308 bullet weights nicely for both field and range work. The muzzle is threaded 5/8-24, the standard pattern for .308, so your existing brake, flash hider, or suppressor threads right up. It's a clean, purpose-built way to tailor your Cross exactly how you want it.
No. The barrel comes chambered, threaded, and fitted with its barrel extension so you can install it yourself with a few basic tools. You'll want to torque it on and confirm headspace with proper go/no-go gauges before shooting. Most owners have it swapped and ready to sight in during an afternoon in the garage.
It's threaded 5/8-24, which is the standard thread pitch for .308 muzzles, so most brakes, flash hiders, and suppressors made for a .30 caliber will thread right on. Always match your suppressor bore diameter to the caliber before shooting. If your current device is already 5/8-24, you're set.
Proof's carbon fiber barrels run up to 64 percent lighter than a comparable steel barrel of similar contour. On the Cross that translates to noticeably better balance and quicker handling since the weight comes off the muzzle end. Owners who've swapped one in consistently mention how much more pleasant the rifle feels to carry and shoot.
A 1:10 twist stabilizes the vast majority of common .308 Winchester loads, comfortably handling the popular 150 to 175 grain range you'll find at most shops. That covers typical hunting and match ammo without issue. If you're loading something on the extreme heavy end, it's worth confirming stability, but for standard fare you're covered.
| UPC | 843068134467 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 134467 |
| Length | 16'' |
| Model |
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