UD Chassis
$350.00 – $450.00
Description
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
Availability
*Current Ruger American lead times are 2-3 weeks. All other inlets available now
Compatibility
- 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
- Solus
- 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
Frequently Bought Together
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UD Double Thumb Rest Grip
$55.00 Select options -
UD Adjustable Butt Stock
$300.00 Select options -
UD Spigot
$45.00 Select options -
UD Lightweight Butt Stock
$240.00 Select options -
UD 1 LBS Forearm Weights
$80.00 Add to cart -
UD Orbit Ballhead
$299.00 Add to cart -
UD Bridge
$90.00 Select options -
UD Launch Pad
$530.00 – $680.00 Select options
Tommylee (verified owner) –
Just got my chassis tonight, and its freakin awsome. I was skeptical of the quality becouse of the low price, but damn. This thing is beautiful, the machining is excellent, no blemishes, the anodizing is perfect, not gloss, not matte just a perfect satin black. Im super excited about my ultradyne chassis, and very glad i didnt go with the rival arms one over the ultradyne chassis. The built in arca rail was the seller for me. Thank you guys for such a quality product at 2/3rds the price of your competitors.
Howard Gillingham (verified owner) –
For a low-end chassis, my UD5 is highly impressive. It now has a side-mount bipod, pistol grip and 4-way adjustable buttstock. Anxiously awaiting my Savage 6.5 to come back from my Cerakoter, and range day. I’m about to order a UD bridge for for it also. This UD5 is an OUTSTANDING piece of equipment for anywhere near the money!
Will (verified owner) –
Awesome Chassis. I own an MDT LSS Chassis. It is very similar and somewhere between the 3 and 4 slot UD Chassis. I can say the Chassis are very similar, but the Ultradyne exceeds it in multiple way. Better price, more color options and it comes with useful features like Arca rail and the ability to add adapters to the end. If you are considering the MDT LSS or LSS-XL this chassis beats them hands down. Machining and cerakote is perfect, its less expensive and it weighs less.
Only thing I can see that needs improvement is adding more actions like the Remington 783, Howa 1500, and Howa Mini.
Also, A folding stock adapter would be an awesome addition.
Joe Starns (verified owner) –
I bought the UD5 and a spigot and it is perfect. Not super long but the spigot gets the bipod right where I want it.
Overall quality, fit and finish are amazing. Anyone on the fence about one of these chassis don’t be. You will not go wrong with Ultradyne products.
Joe S.
Dj (verified owner) –
Very well made chassis. Very lightweight for what you get. Have it on a Vudoo rimfire and works well.
Mark Weimer –
I have just started working on my build and was wanting to do something with the .300 Winchester Short Magnum (WSM). I had a question about compatibility, so I called, and they were extremely helpful and knowledgeable.
The fit and finish of the chassis, light-weight butt stock, and the grip seem to be outstanding. I am very impressed by the build quality and weight (or lack thereof). My only concern is with the recoil pad. It seems a bit stiff and knowing that the .300 WSM packs a punch, it may be inadequate. Time will tell. I DO like the other accessory options available and will likely be purchasing a few of those to make this thing perfect.
Tyler G. (verified owner) –
I just ordered my 5th ULTRADYNE chassis, buttstock and grip. The first was for my 12 yr old son that likes to shoot off a tripod. Turns out that I like it too! I started converting our guns to utilize the stability and accuracy of the the tripod and chassis combination. The chassis has helped the accuracy of several guns and the tripod is also a reliable platform for hunting accuracy at longer ranges. The ARCA attachment provides fast and secure attachment to the tripod head, which is perfect for hunting and getting a young shooter in position. I would like to see an upgraded recoil pad, especially for my son. But overall I think we have significantly improved our hunting system and I have been very happy with customer service, shipping times and most importantly – product quality.
John Knapp (verified owner) –
First time purchase. Will never buy another brand. When I have had the rifle out, people who have shot it comment on how easy it is to get behind the rifle. The ergonomics are outstanding. Not all my rifles are like this. By comparison, people have to work at getting set up right behind other systems I use. Maybe optics / eye relief, but I feel it is the chassis – stock, grip, etc. At the price point – design, features and ergonomics are unbeatable. Oh, and customer service is out-of-this-world. Fast, responsive and sincere. True American Ingenuity. Thank you!
Bob King –
I put the barreled action from my Bergara HMR 6.5 CM into the UD chassis system with the light bag rider, spigot, and right hand thumb shelf grip. That lightened up the gun by 2#s. I changed the scope and the gun is now weighing in from 15#s before to 11.4#s now. The stock is a great quality stock at an affordable price. I emailed back and forth a couple times to arrange for the parts I wanted and got very timely responses. Great company to work with! Thanks guys. I couldn’t be happier.
Skyler Currie (verified owner) –
Hmm. Got it for a bergara b14. The fit and finish is what’s expected for a mid grade chassis but the trigger mechanism pretty exposed. I build this rifle for hunting but that’s gunna get pretty dirty.
Pros: weight, cost, colors, fast shipping
Cons: fit and finish(already is scratched), did not come with the grip screw.
Joe Martin (verified owner) –
Hello. Did your product arrive damaged or missing parts? If not purchaed with a grip, the grip screw is not provided. If the chassis arrived with a scratch on it, please reach out and we would love to make things right!
Cole Phillips (verified owner) –
This thing is amazing, really put new life into my build. Only knock on it is it came with a ding in the aluminum……. wouldn’t be a big deal to someone who isn’t a stickler for perfection, but to my eye I can see this flaw from a low earth orbit….
Eddie Spratlin (verified owner) –
I bought the 7 slot chassis and built it like I wanted, I simply love it, it came out so great, will be a precision 308 when finished…
Bruce Everhart (verified owner) –
UD7 Ruger American Gen 2 6mm ARC. This rifle always shot good but I don’t think I ever saw an impact with the OEM stock. Mounted in the UD7, now I see every one. Out of the box this rifle could shoot killer groups, just not every time. In 50 shots it would put up a 1/4 MOA and a few 1/2 MOA 5 shot groups. The rest could be over MOA. Not any more, I can blame that all on the plastic stock. By the way customer service is great, friendly and do what they say in a timely manner.
Donny (verified owner) –
UD7 remington 700 6mm PRC received my chassis so fast. I think they sent it two days before I ordered it. It looks great if I had a question somebody always pick up the phone. I looked at a lot of online reviews people that never had one had questions but people that did have one said they were great.