SIG SAUER Cross 16″ .308 Win Caliber X-Change Kit 8901360

Description

The SIG SAUER Cross Caliber X-Change Kit is a factory conversion barrel that lets you rechamber your existing Cross rifle into .308 Winchester. It's built around a 16" stainless steel barrel with a medium contour, a 1:10 twist, and a 5/8×24 threaded muzzle, so you can run the muzzle device or can you already own. If you've got a Cross set up in another caliber and you've been eyeing .308 for hunting, target work, or just wider ammo availability, this is the clean way to get there without a whole second build.

What the Cross X-Change Kit Brings to the Table

.308 Winchester is one of the most versatile and widely stocked rounds out there, and the Cross platform handles it well thanks to its free-floated barrel and rigid one-piece receiver. The 16" length keeps things compact and easy to maneuver in the timber or off a truck, and it stays friendly to a suppressor without turning the whole rifle into a boat oar. The medium-contour stainless barrel strikes a nice balance between weight savings and heat management, which matters when you're stringing shots together at the range.

Fitting the .308 Cross Barrel Kit

This is a prefit setup, which means the barrel comes with its extension already fitted, plus the barrel nut and thread protector cap you need to swap it onto your action. Anyone comfortable with basic Cross maintenance and the right tools can handle the changeover at home. The 5/8×24 threads are the standard pattern for .30 caliber, so most brakes, flash hiders, and suppressor mounts thread right on.

One thing worth knowing up front: this kit is the barrel assembly only. It does not include a muzzle device or a magazine, so plan to use the AICS-pattern mags and muzzle hardware you already run on your Cross. It's a straightforward, well-machined way to add real caliber flexibility to a rifle that was designed for it from the start.