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Questions & Answers
Planning on building a 22arc with a Howa 1500 mini. Will this fit? Manufacturer Answer

Hi Nick, the UD Chassis, specifically the UD Howa 1500 SA Chassis, is not compatible with the Howa Mini Action at this time.

by Ultradyne USA, Manufacturer, November 6, 2025
Any way to know what length of action screws this requires?

I am answering my own question. It came with the needed screws.

by Mike, Verified Owner, January 21, 2025
Customer Reviews
Most Recent Reviews
UD5 for the win by CS, Verified Owner, May 27, 2026
This chassis is very well thought out and had every feature that you could ask for. I paired it with a carbine buffer tube and MBA-3 stock that I already had. No complaints.
Most Recent Reviews
Ultradyne UD5 chassis by Alex, Verified Owner, December 28, 2025
I upgraded my Remington 700 Police in .308 win with this chassis. The fit and finish is top notch. I used the Magpul PRS stock and this chassis isn’t made for that stock. No problem I just drilled and taped one hole through the chassis buffer tube en...
Read More...
Most Recent Reviews
Quality machining, very light (measured mine at 20.0oz) yet all the rigidity is there. For a full featured AND lightweight chassis with this level of quality and attention to detail, the price is unbeatable.
Most Recent Reviews
Very pleased again!! by Tacticaldaddy, Verified Owner, February 20, 2025
This is my second UD chassis from optics planet, it's an extremely good platform especially for the money compared to similar chassis!! It's AR compatibility with the furniture and the mlok slots make it advantageous for setting up specific uses!! I ...
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Most Recent Reviews
Excellent design and function by That guy, Verified Owner, February 15, 2025
Lightweight, easily assembled, and with adjustments to the retention slide on the mag release the mag fit perfectly
Most Recent Reviews
Looks good, but not impressed with the mag well. by Mike, Verified Owner, January 21, 2025
I have only tried Magpul AICS magazines so far. It appears as Magpul has redesigned AICS long action mags in the last year or so. The feed lips are different and the mag itself is a bit taller. I installed an actual Remington 700 action and the bolt ...
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Read All 6 Reviews
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made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Ultradyne UD5 Chassis

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. 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 butt stock, 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.image

Specifications for Ultradyne UD5 Chassis:

Manufacturer: Ultradyne
Finish: Cerakote
Hand: Right
Gun Rail: M-LOK

Features of Ultradyne UD5 Chassis

  • Butt stock Interface: Mil Spec
  • Grip Interface: Mil Spec A2
  • Magazine Interface: AICS. 1.35 Max. Barrel Diameter.
  • Forend: Integrated ARCA Rail and MLOK Slots

Package Contents:

  • Ultradyne UD5 Chassis

Ultradyne UD5 Chassis Orderable Models

List of Orderable Models

  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, OD Green, UD20094-OG , MPN: UD20094-OG , UPC: 810140660503 , Code: 3HE-RS0-U5URC-UD20094-OG
  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, Coyote Tan, UD20094-CT , MPN: UD20094-CT , UPC: 810140660510 , Code: 3HE-RS0-U5URC-UD20094-CT
  • Ultradyne UD5 Chassis, Savage SA, RH, Armor Black, UD20004-AB , MPN: UD20004-AB , UPC: 850011462621 , Code: 3HE-RS0-U5URC-UD20004-AB
  • Ultradyne UD5 Chassis, Rem 700 SA, RH, Armor Black, UD20001-AB , MPN: UD20001-AB , UPC: 850011462669 , Code: 3HE-RS0-U5URC-UD20001-AB
  • Ultradyne UD5 Chassis, Rem 700 SA, Right Hand, Midnight Bronze, UD20001-MB , MPN: UD20001-MB , UPC: 850043428725 , Code: 3HE-RS0-U5URC-UD20001-MB
  • Ultradyne UD5 Chassis, Howa 1500 SA, RH, Coyote Tan, UD20126-CT , MPN: UD20126-CT , UPC: 810140662668 , Code: 3HE-RS0-U5URC-UD20126-CT
  • Ultradyne UD5 Chassis, Savage SA, RH, Coyote Tan, UD20004-CT , MPN: UD20004-CT , UPC: 850043428596 , Code: 3HE-RS0-U5URC-UD20004-CT
  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, Midnight Bronze, UD20094-MB , MPN: UD20094-MB , UPC: 810140660435 , Code: 3HE-RS0-U5URC-UD20094-MB
  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, Sniper Grey, UD20094-SG , MPN: UD20094-SG , UPC: 810140660459 , Code: 3HE-RS0-U5URC-UD20094-SG
  • Ultradyne UD5 Chassis, Savage SA, Right Hand, Midnight Bronze, UD20004-MB , MPN: UD20004-MB , UPC: 810140661029 , Code: 3HE-RS0-U5URC-UD20004-MB
  • Ultradyne UD5 Chassis, Tikka T3 SA, RH, OD Green, UD20123-OG , MPN: UD20123-OG , UPC: 810140662323 , Code: 3HE-RS0-U5URC-UD20123-OG
  • Ultradyne UD5 Chassis, Ruger American SA, RH, Armor Black, UD20134-AB , MPN: UD20134-AB , UPC: 810140663610 , Code: 3HE-RS0-U5URC-UD20134-AB
  • Ultradyne UD5 Chassis, Ruger American SA, RH, Midnight Bronze, UD20134-MB , MPN: UD20134-MB , UPC: 810140663320 , Code: 3HE-RS0-U5URC-UD20134-MB
  • Ultradyne UD5 Chassis, Rem 700 SA, RH, Sniper Grey, UD20001-SG , MPN: UD20001-SG , UPC: 850043428565 , Code: 3HE-RS0-U5URC-UD20001-SG
  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, Armor Black, UD20094-AB , MPN: UD20094-AB , UPC: 810140660428 , Code: 3HE-RS0-U5URC-UD20094-AB
  • Ultradyne UD5 Chassis, Howa 1500 SA, RH, Midnight Bronze, UD20126-MB , MPN: UD20126-MB , UPC: 810140662583 , Code: 3HE-RS0-U5URC-UD20126-MB
  • Ultradyne UD5 Chassis, Howa 1500 SA, RH, OD Green, UD20126-OG , MPN: UD20126-OG , UPC: 810140662651 , Code: 3HE-RS0-U5URC-UD20126-OG
  • Ultradyne UD5 Chassis, Tikka T3 SA, RH, Coyote Tan, UD20123-CT , MPN: UD20123-CT , UPC: 810140662330 , Code: 3HE-RS0-U5URC-UD20123-CT
  • Ultradyne UD5 Chassis, Savage SA, Right Hand, OD Green, UD20004-OG , MPN: UD20004-OG , UPC: 810140661081 , Code: 3HE-RS0-U5URC-UD20004-OG
  • Ultradyne UD5 Chassis, Ruger American SA, RH, Sniper Grey, UD20134-SG , MPN: UD20134-SG , UPC: 810140663337 , Code: 3HE-RS0-U5URC-UD20134-SG
  • Ultradyne UD5 Chassis, Tikka T3 SA, RH, Midnight Bronze, UD20123-MB , MPN: UD20123-MB , UPC: 810140662255 , Code: 3HE-RS0-U5URC-UD20123-MB
  • Ultradyne UD5 Chassis, Savage SA, RH, Sniper Grey, UD20004-SG , MPN: UD20004-SG , UPC: 850043428602 , Code: 3HE-RS0-U5URC-UD20004-SG
  • Ultradyne UD5 Chassis, Tikka T3 SA, RH, Sniper Grey, UD20123-SG , MPN: UD20123-SG , UPC: 810140662279 , Code: 3HE-RS0-U5URC-UD20123-SG
  • Ultradyne UD5 Chassis, Rem 700 SA, Right Hand, OD Green, UD20001-OG , MPN: UD20001-OG , UPC: 850043428787 , Code: 3HE-RS0-U5URC-UD20001-OG
  • Ultradyne UD5 Chassis, Howa 1500 SA, RH, Armor Black, UD20126-AB , MPN: UD20126-AB , UPC: 810140662576 , Code: 3HE-RS0-U5URC-UD20126-AB
  • Ultradyne UD5 Chassis, Ruger American SA, RH, Coyote Tan, UD20134-CT , MPN: UD20134-CT , UPC: 810140663351 , Code: 3HE-RS0-U5URC-UD20134-CT
  • Ultradyne UD5 Chassis, Rem 700 SA, RH, Coyote Tan, UD20001-CT , MPN: UD20001-CT , UPC: 850043428558 , Code: 3HE-RS0-U5URC-UD20001-CT
  • Ultradyne UD5 Chassis, Ruger American SA, RH, OD Green, UD20134-OG , MPN: UD20134-OG , UPC: 810140663344 , Code: 3HE-RS0-U5URC-UD20134-OG
  • Ultradyne UD5 Chassis, Tikka T3 SA, RH, Armor Black, UD20123-AB , MPN: UD20123-AB , UPC: 810140662248 , Code: 3HE-RS0-U5URC-UD20123-AB
  • Ultradyne UD5 Chassis, Howa 1500 SA, RH, Sniper Grey, UD20126-SG , MPN: UD20126-SG , UPC: 810140662606 , Code: 3HE-RS0-U5URC-UD20126-SG
  • Ultradyne UD5 Rifles Chassis, Remington 700, 5 Slot, Short Action, Right Hand, Black, UD20001 , MPN: UD20001 , UPC: 850043428718 , Code: 3HE-RS0-U5URC-UD20001

Ultradyne UD5 Chassis Unavailable & Discontinued Models

List of Unorderable Models

  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, Anodized, UD20094 , MPN: UD20094 , UPC: 810140660411 , Code: 3HE-RS0-U5URC-UD20094
  • Ultradyne UD5 Rifles Chassis, Savage 110, 5 Slot, Right Hand, Black, UD20004 , MPN: UD20004 , UPC: 810140661012 , Code: 3HE-RS0-U5URC-UD20004
  • Ultradyne UD5 Chassis, Tikka T3 SA, RH, Black Anodized, UD20123 , MPN: UD20123 , UPC: 810140662231 , Code: 3HE-RS0-U5URC-UD20123
  • Ultradyne UD5 Rifles Chassis, Remington 700, 5 Slot, Short Action, Left Hand, Black, UD20079 , MPN: UD20079 , UPC: 850043428794 , Code: 3HE-RS0-U5URC-UD20079
  • Ultradyne UD5 Chassis, Howa 1500 SA, RH, Anodized, UD20126 , MPN: UD20126 , UPC: 810140662569 , Code: 3HE-RS0-U5URC-UD20126
  • Ultradyne UD5 Rifles Chassis, Savage 110, 5 Slot, Left Hand, Black, UD20085 , MPN: UD20085 , UPC: 810140661098 , Code: 3HE-RS0-U5URC-UD20085
  • Ultradyne UD5 Chassis, Ruger American SA, RH, Black Anodized, UD20134 , MPN: UD20134 , UPC: 810140663313 , Code: 3HE-RS0-U5URC-UD20134
  • Ultradyne UD5 Chassis, CZ 457, RH, Black Anodized, UD20131 , MPN: UD20131 , UPC: 810140663030 , Code: 3HE-RS0-U5URC-UD20131
  • Ultradyne UD5 Chassis, CZ 457, RH, Sniper Grey, UD20131-SG , MPN: UD20131-SG , UPC: 810140663078 , Code: 3HE-RS0-U5URC-UD20131-SG
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, Anodized, UD20096 , MPN: UD20096 , UPC: 810140660527 , Code: 3HE-RS0-U5URC-UD20096
  • Ultradyne UD5 Chassis, CZ 457, RH, OD Green, UD20131-OG , MPN: UD20131-OG , UPC: 810140663122 , Code: 3HE-RS0-U5URC-UD20131-OG
  • Ultradyne UD5 Chassis, CZ 457, RH, Midnight Bronze, UD20131-MB , MPN: UD20131-MB , UPC: 810140663054 , Code: 3HE-RS0-U5URC-UD20131-MB
  • Ultradyne UD5 Chassis, CZ 457, RH, Armor Black, UD20131-AB , MPN: UD20131-AB , UPC: 810140663047 , Code: 3HE-RS0-U5URC-UD20131-AB
  • Ultradyne UD5 Chassis, CZ 457, RH, Coyote Tan, UD20131-CT , MPN: UD20131-CT , UPC: 810140663139 , Code: 3HE-RS0-U5URC-UD20131-CT
  • Ultradyne UD5 Chassis, Rem 700 SA, LH, Armor Black, UD20079-AB , MPN: UD20079-AB , UPC: 850043428428 , Code: 3HE-RS0-U5URC-UD20079-AB
  • Ultradyne UD5 Chassis, Savage SA, LH, Coyote Tan, UD20085-CT , MPN: UD20085-CT , UPC: 850043428619 , Code: 3HE-RS0-U5URC-UD20085-CT
  • Ultradyne UD5 Chassis, Savage SA, LH, Armor Black, UD20085-AB , MPN: UD20085-AB , UPC: 850043428480 , Code: 3HE-RS0-U5URC-UD20085-AB
  • Ultradyne UD5 Chassis, Savage SA, LH, Sniper Grey, UD20085-SG , MPN: UD20085-SG , UPC: 850043428626 , Code: 3HE-RS0-U5URC-UD20085-SG
  • Ultradyne UD5 Chassis, Rem 700 SA, LH, Coyote Tan, UD20079-CT , MPN: UD20079-CT , UPC: 850043428572 , Code: 3HE-RS0-U5URC-UD20079-CT
  • Ultradyne UD5 Chassis, Rem 700 SA, LH, Sniper Grey, UD20079-SG , MPN: UD20079-SG , UPC: 850043428589 , Code: 3HE-RS0-U5URC-UD20079-SG
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, Midnight Bronze, UD20096-MB , MPN: UD20096-MB , UPC: 810140660541 , Code: 3HE-RS0-U5URC-UD20096-MB
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, Sniper Grey, UD20096-SG , MPN: UD20096-SG , UPC: 810140660565 , Code: 3HE-RS0-U5URC-UD20096-SG
  • Ultradyne UD5 Chassis, Savage SA, Left Hand, Midnight Bronze, UD20085-MB , MPN: UD20085-MB , UPC: 810140661104 , Code: 3HE-RS0-U5URC-UD20085-MB
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, Armor Black, UD20096-AB , MPN: UD20096-AB , UPC: 810140660534 , Code: 3HE-RS0-U5URC-UD20096-AB
  • Ultradyne UD5 Chassis, Rem 700 SA, Left Hand, Midnight Bronze, UD20079-MB , MPN: UD20079-MB , UPC: 850043428800 , Code: 3HE-RS0-U5URC-UD20079-MB
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, Coyote Tan, UD20096-CT , MPN: UD20096-CT , UPC: 810140660626 , Code: 3HE-RS0-U5URC-UD20096-CT
  • Ultradyne UD5 Chassis, Savage SA, Left Hand, OD Green, UD20085-OG , MPN: UD20085-OG , UPC: 810140661166 , Code: 3HE-RS0-U5URC-UD20085-OG
  • Ultradyne UD5 Chassis, Rem 700 SA, Left Hand, OD Green, UD20079-OG , MPN: UD20079-OG , UPC: 850043428862 , Code: 3HE-RS0-U5URC-UD20079-OG
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, OD Green, UD20096-OG , MPN: UD20096-OG , UPC: 810140660619 , Code: 3HE-RS0-U5URC-UD20096-OG
  • Ultradyne UD5 Chassis, Rem 700 SA, Right Hand, Tequila Sunrise, UD20001-TS , MPN: UD20001-TS , UPC: 850043428763 , Code: 3HE-RS0-U5URC-UD20001-TS
  • Ultradyne UD5 Chassis, Rem 700 SA, Right Hand, Titanium, UD20001-TI , MPN: UD20001-TI , UPC: 850043428770 , Code: 3HE-RS0-U5URC-UD20001-TI
  • Ultradyne UD5 Chassis, Rem 700 SA, Right Hand, Habanero Red, UD20001-HR , MPN: UD20001-HR , UPC: 850043428756 , Code: 3HE-RS0-U5URC-UD20001-HR
  • Ultradyne UD5 Chassis, Rem 700 SA, Right Hand, Northern Lights, UD20001-NL , MPN: UD20001-NL , UPC: 850043428749 , Code: 3HE-RS0-U5URC-UD20001-NL
  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, Tequila Sunrise, UD20094-TS , MPN: UD20094-TS , UPC: 810140660480 , Code: 3HE-RS0-U5URC-UD20094-TS
  • Ultradyne UD5 Chassis, Savage SA, Right Hand, Titanium, UD20004-TI , MPN: UD20004-TI , UPC: 810140661074 , Code: 3HE-RS0-U5URC-UD20004-TI
  • Ultradyne UD5 Chassis, Savage SA, Left Hand, Habanero Red, UD20085-HR , MPN: UD20085-HR , UPC: 810140661135 , Code: 3HE-RS0-U5URC-UD20085-HR
  • Ultradyne UD5 Chassis, Savage SA, Right Hand, Habanero Red, UD20004-HR , MPN: UD20004-HR , UPC: 810140661050 , Code: 3HE-RS0-U5URC-UD20004-HR
  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, Habanero Red, UD20094-HR , MPN: UD20094-HR , UPC: 810140660473 , Code: 3HE-RS0-U5URC-UD20094-HR
  • Ultradyne UD5 Chassis, Rem 700 SA, Left Hand, Titanium, UD20079-TI , MPN: UD20079-TI , UPC: 850043428855 , Code: 3HE-RS0-U5URC-UD20079-TI
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, Northern Lights, UD20096-NL , MPN: UD20096-NL , UPC: 810140660572 , Code: 3HE-RS0-U5URC-UD20096-NL
  • Ultradyne UD5 Chassis, Rem 700 SA, Left Hand, Tungsten, UD20079-TU , MPN: UD20079-TU , UPC: 850043428817 , Code: 3HE-RS0-U5URC-UD20079-TU
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, Tequila Sunrise, UD20096-TS , MPN: UD20096-TS , UPC: 810140660596 , Code: 3HE-RS0-U5URC-UD20096-TS
  • Ultradyne UD5 Chassis, Rem 700 SA, Right Hand, Tungsten, UD20001-TU , MPN: UD20001-TU , UPC: 850043428732 , Code: 3HE-RS0-U5URC-UD20001-TU
  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, Titanium, UD20094-TI , MPN: UD20094-TI , UPC: 810140660497 , Code: 3HE-RS0-U5URC-UD20094-TI
  • Ultradyne UD5 Chassis, Savage SA, Right Hand, Northern Lights, UD20004-NL , MPN: UD20004-NL , UPC: 810140661043 , Code: 3HE-RS0-U5URC-UD20004-NL
  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, Tungsten, UD20094-TU , MPN: UD20094-TU , UPC: 810140660442 , Code: 3HE-RS0-U5URC-UD20094-TU
  • Ultradyne UD5 Chassis, Savage SA, Right Hand, Tungsten, UD20004-TU , MPN: UD20004-TU , UPC: 810140661036 , Code: 3HE-RS0-U5URC-UD20004-TU
  • Ultradyne UD5 Chassis, Savage SA, Right Hand, Tequila Sunrise, UD20004-TS , MPN: UD20004-TS , UPC: 810140661067 , Code: 3HE-RS0-U5URC-UD20004-TS
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, Habanero Red, UD20096-HR , MPN: UD20096-HR , UPC: 810140660589 , Code: 3HE-RS0-U5URC-UD20096-HR
  • Ultradyne UD5 Chassis, Savage SA, Left Hand, Titanium, UD20085-TI , MPN: UD20085-TI , UPC: 810140661159 , Code: 3HE-RS0-U5URC-UD20085-TI
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, Titanium, UD20096-TI , MPN: UD20096-TI , UPC: 810140660602 , Code: 3HE-RS0-U5URC-UD20096-TI
  • Ultradyne UD5 Chassis, Savage SA, Left Hand, Northern Lights, UD20085-NL , MPN: UD20085-NL , UPC: 810140661128 , Code: 3HE-RS0-U5URC-UD20085-NL
  • Ultradyne UD5 Chassis, Rem 700 SA, Left Hand, Northern Lights, UD20079-NL , MPN: UD20079-NL , UPC: 850043428824 , Code: 3HE-RS0-U5URC-UD20079-NL
  • Ultradyne UD5 Chassis, Rem 700 LA, Left Hand, Tungsten, UD20096-TU , MPN: UD20096-TU , UPC: 810140660558 , Code: 3HE-RS0-U5URC-UD20096-TU
  • Ultradyne UD5 Chassis, Savage SA, Left Hand, Tungsten, UD20085-TU , MPN: UD20085-TU , UPC: 810140661111 , Code: 3HE-RS0-U5URC-UD20085-TU
  • Ultradyne UD5 Chassis, Rem 700 SA, Left Hand, Tequila Sunrise, UD20079-TS , MPN: UD20079-TS , UPC: 850043428848 , Code: 3HE-RS0-U5URC-UD20079-TS
  • Ultradyne UD5 Chassis, Savage SA, Left Hand, Tequila Sunrise, UD20085-TS , MPN: UD20085-TS , UPC: 810140661142 , Code: 3HE-RS0-U5URC-UD20085-TS
  • Ultradyne UD5 Chassis, Rem 700 LA, Right Hand, Northern Lights, UD20094-NL , MPN: UD20094-NL , UPC: 810140660466 , Code: 3HE-RS0-U5URC-UD20094-NL
  • Ultradyne UD5 Chassis, Rem 700 SA, Left Hand, Habanero Red, UD20079-HR , MPN: UD20079-HR , UPC: 850043428831 , Code: 3HE-RS0-U5URC-UD20079-HR
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