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The Sig Sauer CAL-X Cross Kit is a factory caliber conversion built to drop a 6.5 Creedmoor barrel onto your existing Cross rifle. If you already own a Cross in .308 or .277 Fury and want to get into flatter-shooting, wind-bucking 6.5 Creedmoor territory, this is the clean way to do it without buying a second rifle. The barrel comes as a prefit with the barrel extension already installed, so headspacing is handled by the factory setup and you're mostly dealing with a bolt-out barrel change on the bench.
This is an 18-inch stainless barrel with a 1:8 twist, which is the same spec Sig runs on their factory 6.5 Creedmoor Cross rifles. That twist rate loves the heavier match bullets, and it pairs especially well with 140- to 147-grain ELD-style loads for long-range work. The muzzle is threaded 5/8×24, so your existing brakes, comps, and suppressors that fit the standard pattern will thread right on. Whether you're punching paper at distance or chasing game across open country, 6.5 Creedmoor gives you a low-recoil, high-BC round that stays flat and honest downrange.
The Cross platform was designed with barrel swaps in mind, and the process is straightforward for anyone comfortable with basic gunsmithing tools. You'll pull the handguard and muzzle device, back off the barrel nut, swap in the new prefit assembly, and torque it back down. A vise and an armorer's wrench make the job go smooth. Since the extension ships attached, you're not fighting headspace the way you would with a bare blank.
The kit includes the 18-inch 6.5 Creedmoor barrel with barrel extension, a barrel nut, and a thread protector cap to keep those muzzle threads clean when you're running bare. It's backed by Sig's Infinite Guarantee, which is about as no-nonsense as warranties get. For Cross owners who want one rifle that wears multiple calibers, this kit is a smart way to stretch the platform.
Yes, this kit is built to fit the SIG SAUER Cross platform, so it works on Cross rifles chambered in .308 Winchester, .277 Fury, or 6.5 Creedmoor. It swaps your existing barrel for an 18-inch 6.5 Creedmoor prefit. The barrel extension ships already installed to keep the swap simple.
Most owners can handle this at home with a vise, an armorer's wrench, and a screwdriver set. The Cross was designed for barrel swaps, and since the extension comes attached to the prefit barrel, the factory has already handled the headspacing. If you're not comfortable turning a barrel nut, any competent gunsmith can knock it out quickly.
The 18-inch barrel is threaded 5/8×24, which is the standard pattern for .30-caliber and 6.5 muzzle devices. That means most brakes, compensators, and suppressors on the market will thread right on. A thread protector cap is included to keep the threads clean when you're running the barrel bare.
This barrel runs a 1:8 twist, matching the spec on Sig's factory 6.5 Creedmoor Cross rifles. That twist stabilizes the heavier match bullets nicely, so it shoots well with 140- to 147-grain loads. It's a solid setup for precision and long-range shooting.
| UPC | 798681677382 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 8901359 |
| Length | 18" |
| Model |
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