The Ultradyne Adjustable Stock Gen 2 for 1913 Picatinny Rail is a stock that fits 1913 Picatinny Rail, offered in Black, Bronze.
Designed for shooters who demand precision, modularity, and reliable fit, the UD Gen 2 Adjustable Butt Stock is a purpose-built stock that attaches quickly to any 1913 Picatinny, or mil-spec threaded rear mounting interface, and pairs exceptionally well with the UD Chassis and Picatinny Chassis.
The stock sets your length of pull and cheek position, so it has a direct effect on how consistently you can build a position behind the rifle. Collapsible AR-15 stocks slide on to the buffer tube (receiver extension) — check whether your rifle has a mil-spec or commercial diameter tube, as the two are not interchangeable.
How It Compares
Also compare the UD6 Chassis for Remington 700 Short Action, UD6 Chassis for Ruger American Short Action and UDX6 Combo Chassis for Ruger American That Utilize AR Magazines. Browse all stocks & Chassis and the full Ultradyne range.
Ideal For
- Rifles with a 1913 Picatinny or mil-spec threaded rear interface
- Pairing with the Ultradyne UD Chassis or Picatinny Chassis
- Setting length of pull and cheek position for a consistent position
Key Features
- 6061 T6 Aluminum Material
- Stock Interface: 1913 Picatinny or Mil-Spec Buffer Tubes
- Cerakote Finish
Compatibility & Fitment
Fits 1913 Picatinny Rail. Not sure it fits? Contact us before you order and we will check for you.
Technical Specifications
Brand | Ultradyne |
Type | Stock |
Model | Gen 2 |
Finish | Cerakote |
Colors | Black, Bronze |
MPN | UD20168-AB, UD20168-MB |
UPC | 810140664198, 810140664211 |
US Shipping & Support
Genuine Ultradyne, brand new and covered by the manufacturer's warranty. Shipping is free on US orders of $99 or more, and smaller orders ship from $6.95. Questions about fit, mounting or which option suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What colors is it available in?
Black, Bronze. Choose your color from the options above.
What does the Adjustable Stock Gen 2 fit?
Fits 1913 Picatinny Rail.
Is this a genuine Ultradyne product?
Yes. It is a new, genuine Ultradyne product sourced through an authorized US distributor.
How much is shipping?
Shipping is free on US orders of $99 or more. Orders under $99 ship at a flat rate from $6.95 to $9.95, depending on the order total.
