The Ultradyne Chassis is crafted from a solid bar of 6061 T6 Aircraft Aluminum for exceptional strength and durability. The one-piece design weighs between 1.1 and 1.5 pounds, depending on the model. This makes it suitable for both hunting rifles that weigh as little as 6 pounds and long range target rifles that weigh up to 16 pounds. When paired with the Ultradyne Adjustable Butt Stock, it is lighter than most factory stocks yet has the ability to add up to 5 pounds with optional weights.
The Ultradyne Chassis is packed with features including an adjustable magazine release lever, compatibility with AICS magazines, ability to work with any Mil-Spec carbine buffer tube, a built-in Arca rail, M-LOK slots on three sides, and Dynalock technology to ensure a secure fit. The action is held in place with V-channel bedding that can accommodate free-floated barrels up to 1.35 inches in diameter.
Please note Chassis compatibilities under the compatibility tab.
*Check availability tab for current lead times.
DISCLAIMER: Please allow up to 5 business days for Cerakote®’d products before shipment (Holiday demand may cause extended lead times)
General
- 6061 T6 Aluminum
- Cerakote® Finish
- Stock Interface: Mil Spec
- Grip Interface: Mil Spec A2
- Magazine Interface: AICS
- 1.35” Max. Barrel Diameter
UD3 Short Action
- 17-20 oz depending on inlet
- 15.3” Overall Length, 6.5" Forend/Arca Length
- 8 M-LOK Slots
UD3 Long Action
- 22 oz
- 16.3” Overall Length, 6.5" Forend/Arca Length
- 8 M-LOK Slots
UD5 Short Action
- 19-22 oz depending on inlet
- 18.5” Overall Length, 9.5" Forend/Arca Length
- 14 M-LOK Slots
UD5 Long Action
- 23.5 oz
- 19.4” Overall Length, 9.5" Forend/Arca Length
- 14 M-LOK Slots
UD7 Short Action
- 21-23 oz depending on inlet
- 21.6” Overall Length, 12.5" Forend/Arca Length
- 20 M-LOK Slots
UD7 Long Action
- 25 oz
- 22” Overall Length, 12.5" Forend/Arca Length
- 20 M-LOK Slots

- Rem 700 SA
- UD3: 17 oz, UD5: 19 oz, UD7: 21 oz
- Rem 700 LA
- UD3: 22 oz, UD5: 23.5 oz, UD7: 25 oz
- Rem 700 Clones (Bergara B14, Curtis Custom, Zermatt Origin, etc.) *Please contact us regarding other clone compatibilities
- Long Action: standard length AICS only (not CIP compatible)

- Savage SA (10, 11, 12, 14, 16, 110)
- UD3: 18 oz, UD5: 20 oz, UD7: 22 oz
- Not compatible with Savage Axis
- Compatible with both 4.275" and 4.400" action screw spacing


- Tikka SA (T3, T3X) *Please note this chassis only takes metal AICS magazines. Accurate Mags are available on our site.
- UD3: 20 oz, UD5: 22 oz, UD7: 24 oz

- Howa SA (1500) *not compatible with Howa Mini or Superlite actions
- UD3: 18 oz, UD5: 20 oz, UD7: 22 oz

- Ruger SA (American, American Gen II)
- UD3: 19 oz, UD5: 21 oz, UD7: 23 oz
- Not compatible with AR magazines

- CZ 457
- UD3: 19 oz, UD5: 21 oz, UD7: 23 oz