AR-STONER LR-308 Side Charging Upper Receiver Assembly 308 Winchester 20″ 416R Stainless SOCOM Barrel 15″ M-LOK Ultralight Handguard


Category: Product ID: 19072


The AR-STONER LR-308 Side Charging Upper Receiver assembly chambered in 308 Winchester 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 matte finished.

This complete upper features a rifle-length gas system, bolt carrier group, SOCOM barrel with a stainless finish and an ultralight 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.


  • Chambered in 308 Winchester
  • SOCOM contour barrel with 1:10 twist rate
  • Ultralight handguard


Made In United States of America

WARNING: Cancer and Reproductive Harm –


Product Information

Cartridge 308 Winchester
Color Black
Finish Anodized
Material Aluminum
Weight 6.7 Pound
Barrel Length 20 Inches
Twist 1:10 Inches
Threads 5/8″-24
Barrel Contour SOCOM
Sights No
Barrel Finish Stainless
Chrome Lined No
Gas Block Diameter 0.75 Inches
Gas System Length Rifle
M4 Feed Ramps Yes
Upper Receiver Type Side Charging
Barrel Material 416R Stainless Steel
Handguard 15″ 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
AR-10, LR-308

Delivery Information

Shipping Weight 7.075 Pounds


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