User Ratings
No ratings yet
Be the first to review this product
Ultradyne USA UD Arca Dynalock Rail for M-LOK is a rugged, precision accessory rail designed to add Arca and Dynalock compatibility to your firearm. It installs using the included M-LOK fasteners (or by a qualified gunsmith) and is ideal for shooters who want quick, stable mounting for Arca clamp accessories. Built from 6061-T6 aluminum with a hardcoat anodized finish, this 12.45-inch (316.83 mm) rail delivers strength, corrosion resistance, and dependable performance. Weight: 8.4 oz.
Specifications
- Manufacturer:
- Ultradyne
- Category:
- handguard-rails
- Platforms:
- AR-15
- Interfaces:
- Magpul M-LOK
- Weight:
- 8.4 oz
- Length:
- 12.5"
- UPC:
- 8227929161850
- MPN:
- UD20083
- Required Component:
- Yes
Parts Cabinet
Track parts you own or plan to buy.
Where to Buy
Have one to sell?
Sponsored
MantisX
The smart way to train your AR build
Built your rifle — now train it. BlackBeardX installs in minutes and turns your AR into a full dry fire system with smart feedback on every pull.
Shop BlackBeardXPrice History
Current
$53.20
Lowest
$53.20
Highest
$77.00
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertSimilar Products
Bravo Company MCMR-10 10.5in M-LOK Free-Float Handguard AR-15 5.56 Black
Bravo Company Manufacturing (BCM)
$211.98
Aero Precision Gen 2 M4 12in Enhanced M-LOK Black AR-15 Handguard APRA100217C
Aero Precision
$124.99
Daniel Defense 00408020011 RIS II Hndguard MK18 FDE
Daniel Defense
$522.89
UTG Pro AR15 Super Slim M-LOK 15in Drop-In Handguard MTU015SSM
Utg Pro
$86.34
Reptilia M-LOK Handguard 9.4in FDE Anodized AR-15
Reptilia
$252.99
Geissele SMR MK8 13.5in M-LOK Handguard Desert Dirt DDC
Geissele Automatics
$285.84
AT3 Tactical SPEAR M-LOK AR-15 Free Float Handguard 9–15 in
At3 Tactical
$139.99
Midwest Industries Gen2 Two Piece Free Float Handguard, Mid-Length, Black MCTAR-21G2
Midwest Industries
$163.99
Builds Using This Part
No builds yet — be the first to use this part.
Related Guides
Guide
AK Furniture and Ergonomics: Stocks, Handguards, and Practical Setup
How AK stock and handguard choices affect control, heat management, optic height, and practical shooting ergonomics.
5 min read
Guide
AK Optics Mounting Guide: Side Rail vs Dust Cover vs Handguard
Compare the main AK optics mounting approaches and choose the right setup for durability, repeatable zero, and practical shooting performance.
8 min read
Guide
The AK Platform: Core Design, Strengths, and Builder Tradeoffs
A practical AK overview covering operating system basics, parts ecosystem realities, and where the AK platform shines compared to AR-pattern rifles.
8 min read