The Ultradyne UD6 chassis is a precision rifle chassis system engineered for Remington 700 short-action rifles, built from solid 6061 T6 aircraft aluminum for durability and reliability. Whether you're building a lightweight 6-pound hunting rifle or a heavier long-range precision gun up to 16 pounds, this one-piece chassis delivers the structural integrity modern shooters expect. The modular design accepts AICS magazines, giving you flexibility in ammunition and feeding systems, while the FAB Defense Gradus grip provides a comfortable, controlled hold for both hunting and range work.

At between 1.1 and 1.5 pounds depending on your specific build, the UD6 keeps your rifle's overall weight down without sacrificing rigidity. The six-slot design allows you to customize your setup with optional weights—you can add up to 5 pounds if your load development or shooting discipline calls for more mass up front. The 1.35-inch maximum barrel diameter clearance works with most modern contours you'll encounter on custom or factory barrels, so you're not locked into a narrow build window.

This is a right-hand chassis designed for hunters and precision rifle shooters who want a solid foundation for a dedicated long-range rifle or a reliable upgrade to an existing R700 platform. It pairs seamlessly with Ultradyne's adjustable butt stocks and other modular components, allowing you to dial in length of pull and cheek rise to fit your frame and shooting style. Build it light for backcountry hunting, dial it in for ELR competition, or keep it steady for varmint work—the UD6 gives you the platform to do it.

The Ultradyne UD6 chassis is a precision rifle chassis system engineered for Remington 700 short-action rifles, built from solid 6061 T6 aircraft aluminum for durability and reliability. Whether you're building a lightweight 6-pound hunting rifle or a heavier long-range precision gun up to 16 pounds, this one-piece chassis delivers the structural integrity modern shooters expect. The modular design accepts AICS magazines, giving you flexibility in ammunition and feeding systems, while the FAB Defense Gradus grip provides a comfortable, controlled hold for both hunting and range work.

At between 1.1 and 1.5 pounds depending on your specific build, the UD6 keeps your rifle's overall weight down without sacrificing rigidity. The six-slot design allows you to customize your setup with optional weights—you can add up to 5 pounds if your load development or shooting discipline calls for more mass up front. The 1.35-inch maximum barrel diameter clearance works with most modern contours you'll encounter on custom or factory barrels, so you're not locked into a narrow build window.

This is a right-hand chassis designed for hunters and precision rifle shooters who want a solid foundation for a dedicated long-range rifle or a reliable upgrade to an existing R700 platform. It pairs seamlessly with Ultradyne's adjustable butt stocks and other modular components, allowing you to dial in length of pull and cheek rise to fit your frame and shooting style. Build it light for backcountry hunting, dial it in for ELR competition, or keep it steady for varmint work—the UD6 gives you the platform to do it.