AR-STONER AR-15 Side Charging Upper Receiver Assembly Gen 2 223 Remington (Wylde) 18″ Spiral Fluted Barrel 12″ M-LOK Ultralight Handguard


Category: Product ID: 18894


The AR-STONER AR-15 Side Charging Upper Receiver Assembly Gen 2 is chambered in .223 Remington Wylde and delivers precision accuracy at an affordable price. The machined billet aluminum upper receiver is combined with an extruded aluminum free float M-LOK handguard and both are hard coat anodized.

This complete upper features a mid-length gas system, bolt carrier group, 18” heavy profile barrel with a matte finish and a lightweight 15” free float AR-Stoner M-LOK handguard and a flash hider.

Attach your favorite sling to the free float handguard with integrated QD mounts and use the precision M-LOK cutouts at the three, six, and nine o’clock positions for mounting MIL-STD 1913 Picatinny rails or other direct-attach M-LOK accessories.


  • Gen 2 Bolt Handle
  • Spiral Fluted Barrel
  • Chambered in .223 Remington Wylde
  • 16″ M4 Contour Barrel

Made In United States of America

WARNING: Cancer and Reproductive Harm –


Product Information

Cartridge 223 Wylde
Finish Matte
Material Aluminum
Extra Features Spiral Flutes
Weight 5.25 Pound
Barrel Length 18 Inches
Twist 1:8 Inches
Threads 1/2″-28
Barrel Contour Heavy
Sights No
Barrel Finish Black Nitride
Chrome Lined No
Gas Block Diameter 0.75 Inches
Gas System Length Mid-Length
M4 Feed Ramps Yes
Upper Receiver Type Side Charging Gen 2
Barrel Material 416R Stainless Steel
Handguard 12″ M-LOK Ultralight
Bolt Carrier Assembly Included Yes
Muzzle Device Flash Hider
Mil-Spec or Commercial Commercial
Country of Origin United States of America
Compatible With

Delivery Information

Shipping Weight 6.155 Pounds


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