Knights Armament AR-15 SR-30 Mod 2 Upper Receiver Assembly 300 AAC Blackout 9.5″ Barrel URX 4 M-LOK Handguard


Category: Product ID: 13359


The Knights Armament SR-30 E3 MOD 2 takes advantage of the .300 BLK, offering a 9.5” barrel that is as capable as an 11.5” 5.56mm SBR, for a significantly more transportable and maneuverable firearm. The QDC compatible Flash Hider will mount any of the KAC 7.62mm QDC suppressors. The SR-30 has 99% parts compatibility with the SR-15, requiring only a dedicated barrel and muzzle device. Seamlessly transition from subsonic ammunition to supersonic with nothing more than a change of the magazine.

Made In United States of America

WARNING: Cancer and Reproductive Harm –


Product Information

Cartridge 300 AAC Blackout (7.62x35mm)
Color Black
Finish Anodized
Material Aluminum
Weight 3.8 Pound
Barrel Length 9.5 Inches
Twist 1:7 Inches
Threads 5/8″-24
Sights Yes
Barrel Finish Black
Chrome Lined Yes
Gas Block Diameter 0.75 Inches
Gas System Length Pistol
M4 Feed Ramps Yes
Upper Receiver Type A3 Flat-Top
Bolt Carrier Assembly Included Yes
Muzzle Device QDC Compatible Flash Hider
Mil-Spec or Commercial Mil-Spec
Country of Origin United States of America

Delivery Information

Shipping Weight 4.500 Pounds


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