UD Chassis Combos



Discover the ultimate convenience with Ultradyne Chassis combos, designed to streamline your rifle build. With a chassis, butt stock, and grip included, all you need to do is drop in your action and tighten the action screws. The one-piece UD Chassis weighs between 1.1 and 1.3 pounds, delivering a lightweight foundation. Paired with the Ultradyne Lightweight Butt Stock, it beats most factory stocks in weight while offering the option to add weights and accessories.

The UD Chassis boasts a range of features, from an adjustable magazine release lever to AICS magazine compatibility. Its built-in Arca rail and M-LOK slots provide versatile attachment points, while Dynalock technology ensures a secure fit in Arca clamps. The V-channel bedding accommodates barrels up to 1.35 inches in diameter, offering stability and accuracy.

Crafted from solid 6061 T6 aluminum, the UD Lightweight Butt Stock achieves the ideal balance between weight and durability. It’s adjustable in Length of Pull (LOP) from 13″ to 14″ with removable spacers and offers three cheek height options for personalized comfort. Each chassis combo comes standard with a medium height cheek piece and two LOP spacers, with additional options available for purchase.

Completing the build is the B5 Type 22 grip, adding a sleek, lightweight touch to your rifle. Enhance your build with readily available accessories and experience a tailored fit that maximizes your shooting performance.


  • 6061 T6 Aluminum
  • Anodized Finish
  • Chassis: UD5
  • Grip: B5 Type 22
  • Magazine Interface: AICS
  • 1.35” Max. Barrel Diameter
  • Butt Stock: UD Lightweight Butt Stock
  • Cheek Height: Medium
  • Length of Pull Spacers: 2
Rem 700 SA
  • 2.2 LBS
  • 28” Overall Length
  •  9.25" Forend Length
  • 7.7" Arca Length
Savage SA
  • 2.2 LBS
  • 28” Overall Length
  •  9.25" Forend Length
  • 7.7" Arca Length
Rem 700 LA
  • 2.4 LBS
  • 28.65” Overall Length
  •  9.25" Forend Length
  • 7.7" Arca Length


  • Rem 700 SA
  • Rem 700 SA Clones (Bergara B14, Curtis Custom, Zermatt Origin) *Please contact us regarding other clone compatibilities 
  • Rem 700 LA
  • Savage SA (10, 11, 12, 14, 16, 110)
  • V22
  • Solus


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