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The Ultradyne UD6 sits between ultra-compact and full-sized, striking a real balance for Remington 700 short action builds that need to stay nimble without sacrificing functionality. Machined from a solid bar of 6061 T6 aircraft aluminum, this chassis weighs just 1.1 to 1.5 pounds but handles the stresses of both lightweight hunting rigs and heavier long-range setups without any flex or compromise.
This isn't stripped-down aluminum with a rail bolted on. The UD6 comes packed with features that matter. There's an integrated full-length Arca rail on the bottom for quick mounting and bag support, M-LOK slots along three sides for accessories, and adjustable magazine release so you can fine-tune how your AICS mags seat. The action sits in V-channel bedding that accommodates free-floated barrels up to 1.35 inches in diameter, giving you clean, consistent shooting without the action fighting the stock.
The whole platform is designed around the idea that your rifle setup should be yours. It works with any mil-spec buffer tube or the optional Ultradyne adjustable butt stock, accepts a UD spigot to extend the forend if you want more real estate, and integrates with their UD Bridge for night vision setups. The Dynalock technology ensures everything stays tight without stripping threads or needing exotic tools. Remington 700 short actions drop right in, and the design gives you plenty of space for different bolt handle positions without fitment issues.
Every UD6 gets a perfect satin black anodize that's durable and doesn't show fingerprints like gloss finishes. The machining is clean with no blemishes or rough edges. This is the kind of quality you'd expect from a higher price point but without the markup.
Yes, the UD6 accepts any mil-spec carbine buffer tube, so you can use existing butt stocks or add the optional Ultradyne Gen 2 adjustable stock. The chassis is designed for compatibility without forcing you into a complete overhaul.
Absolutely. The integrated Arca rail runs the full length of the bottom and accepts standard Arca clamps, plus you can add Ultradyne bag riders in different weights via the M-LOK slots. This gives you flexibility in how you set up support and balance for different situations.
The numbers refer to M-LOK slots on the forend. The UD3 is shortest and most compact, the UD5 is mid-length, and the UD6 splits the difference with more real estate than the UD5 while staying manageable. Choose based on your preferred shooting position and how much accessory mounting you want.
Yes, the V-channel bedding accommodates free-floated barrels up to 1.35 inches in diameter. The action stays isolated from the stock, which helps you take advantage of a quality barrel's potential without the stock interfering with accuracy.
| UPC | 810140664266 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | UD20171-AB |
| Color | Black |
| Model | |
| Product Type | Chassis |
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