ULTRADYNE UD DYNA ARCA RAIL 12.45″
$61.23
The Ultradyne UD Dyna ARCA Rail, at 12.45 inches, revolutionizes firearm accessory versatility with its seamless integration of ARCA and Dynalock technology. Designed for serious shooters, this rail enhances your setup for various applications, reflecting Ultradyne USA’s commitment to precision and performance.
3 in stock
The Ultradyne USA UD Arca Dynalock Rail is MLOK compatible and measures 12.45 inches long. It features aluminum construction, an anodized finish, and a black color.
The rail weighs 8.4 oz and is identified by manufacturer part number UD20083.
- Manufacturer: Ultradyne USA
- Model: UD Arca Dynalock Rail
- Compatibility: MLOK
- Length: 12.45 inches
- Weight: 8.4 oz
- Construction: Aluminum
- Finish: Anodized
- Color: Black
- Manufacturer Part Number: UD20083
- UPC: 850043428466
| Weight | 0.500 lbs |
|---|---|
| Dimensions | 15.000 × 2.000 × 0.750 in |
| Manufacturer | Ultradyne USA |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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