Knight's Armament SR-15 E3 MOD2 URX4 5.56mm 14.5" Carbine SBR

Out of stock
as of 07/12/2024 9:53AM CST
Store Inventory
Available OnlineOut of stock
Fountain Valley, CAOut of stock
The Colony, TXOut of stock
SKU: KAC-31946
MPN: 31946
UPC: 819064016182

This item has to be shipped to a licensed class III dealer. All NFA rules apply.

Inter-Store Transfer

If this item is out of stock at your local RifleGear but available at our other location, no problem. Just place your order and select In-Store Pickup as the shipping method. As long as the item is legal in your location, we will transfer the item for you. You will be notified by email once your item has arrived at the destination.

The SR-15 E3 Mod 2 series’ 5.56 mm NATO 14.5" chrome-lined barrel is manufactured for military grade specifications and is paired with a proprietary length gas system. This mid-length gas system improves reliability while reducing felt recoil under use. An improved E3 round-lug bolt design both enhances function and increases bolt life far beyond the industry standard. The ambidextrous bolt release, selector lever, and magazine release offers left-handed users the ergonomic advantages inherent to AR15-based controls.

Features a 14.5" chrome-lined barrel, 13" URX 4 M-LOK handguard, 3-Prong Flash Eliminator with KAC QDC compatible mounting interface.

Multi Lug Improved E3 Bolt
Hammer Forged Barrel
Ambidextrous Controls
2 Stage Match Trigger
QDC Quick Disconnect Coupler Suppressor Interface
M-LOK Accessory Mounting System Rail

Caliber 5.56x45 NATO
Capacity *30 Rounds
Barrel Length 14.5", 1:7" Twist
Overall Length 32" - 35"
Weight 6.3 lbs

*Not available for California and Restricted States.

This item has to be shipped to a licensed class III dealer. All NFA rules apply.

Important note about our photos
While we make every effort to ensure that our product photos are accurate, manufacturers occasionally change the design of components such as triggers, sights, or magazines without notice. Also, modifications to the firearm or component may be required in order to meet specific state compliance requirements. While we make every effort to accurately describe and illustrate the item you are going to receive, there may be visual differences on various components that do not affect functionality.

Federal law requires that you be 21 years of age or older to purchase a handgun, frame or receiver. To purchase a shotgun or rifle, you must be 18 years of age or older. 18 U.S.C. Section 922(b)(1).

As required by federal law, this item may only be shipped to a dealer with a valid Federal Firearms License. If you do not specify the name and shipping address of your dealer, your order will be delayed.
 Click here for more information on buying a gun online.  

California Residents
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to


Customer Reviews

(0.00)stars out of 5
# of Ratings: 0