Rock River Arms LAR-PDS 5.56mm Pistol with Aluminum Tri-Rail
User Ratings
No ratings yet
Be the first to review this product
The Rock River Arms LAR-PDS Pistol is the first generation of firearms using RRA’s piston driven system (PDS). Features include a full length top mounting rail from the rear of the receiver to the regulator housing for flexible placement of optics and accessories, a two position adjustable regulator, folding ambidextrous non-reciprocating charging handles, a rear MS1913 rail, and the LAR-PDS Aluminum Tri-Rail Handguard. Firearm specifications: CALIBER: 5.56mm NATO chamber for 5.56mm and .223 cal; UPPER RECEIVER: Proprietary, with Extended Top Rail; CHARGING HANDLE: Proprietary Ambidextrous Non-Reciprocating; BARREL: 9 Inch Chrome Moly, 1:9 Twist; MUZZLE DEVICE: A2 Flash Hider / 1/2-28 Thread; TRIGGER: RRA Two Stage; PISTOL GRIP: Hogue Rubber Pistol Grip; FRONT SLING / LIGHT MOUNT: MS1913 Rail on Regulator Housing; REAR SLING MOUNT: MS1913 Rail on Rear Receiver Adapter; LENGTH: 18.25 Inches; WEIGHT: 5 Pounds; INCLUDES: One Magazine, Manual, Warranty
Specifications
- Manufacturer:
- Rock River Arms
- Category:
- upper-receiver
- Caliber:
- 5.56x45mm NATO
- Platforms:
- AR-15
- Weight:
- 80 oz (5.00 lbs)
- Length:
- 18.3"
- MPN:
- LP2113
- 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
$1,399.99
Lowest
$1,399.99
Highest
$1,399.99
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 BCM4 Upper Receiver Assembly Flat Top With Forward Assist 1913 Rail
Bravo Company Manufacturing (BCM)
$129.00
Aero Precision AR15 Assembled Upper Receiver - Anodized Black - APAR501603AC
Aero Precision
$118.99
LMT Monolithic Upper Receiver - AR-15 - MRP-L - M-LOK - Specwar - 11.5"
LMT
$912.60
Griffin Armament Mk1 Upper Receiver Assembled Aluminum Black
Griffin Armament
$113.95
BCM MK2 Carbine Barreled Upper MCMR-10 - 12.5in
Bravo Company Manufacturing (BCM)
$820.39
AERO PRECISION - 5.56X45 NATO ASSEMBLED UPPER RECEIVER NO AUTO SEAR CUT FOR AR-15
Aero Precision
$119.99
COLT Monolithic AR-15 Pistol Complete Upper Receiver 5.56x45 NATO 11.5" Barrel
Colt
$959.99
Luth-ar UR-01-M16-A A1 Upper Receiver 223/5.56mm Aluminum Black Hardcoat Anodize
Luth-AR
$180.69
Builds Using This Part
No builds yet — be the first to use this part.
Related Guides
Guide
5.56 NATO, .223 Remington, and .223 Wylde: Chamber Differences Explained
A technical breakdown of the differences between 5.56 NATO, .223 Remington, and .223 Wylde chambers — what each accepts safely, and how to choose for your build.
5 min read
Guide
AR-10 Receiver Patterns: DPMS vs. Armalite Compatibility
The AR-10 has two incompatible receiver patterns — DPMS and Armalite — that look similar but do not share parts. This guide explains the differences and how to buy correctly.
6 min read
Guide
The AR-10 Platform: What It Is and How It Differs from the AR-15
A practical overview of the AR-10 — its origins, how it differs from the AR-15, available calibers, and when it makes more sense than a standard AR-15 build.
6 min read