AR-STONER LR-308 A3 Upper Receiver Assembly 308 Winchester 18" Barrel w/ 15" M-Lok Handguard

  • Product #: 336133
  • AR-Stoner #: UA308MSC18110(P)-MLOK
AR-STONER LR-308 A3 Upper Receiver Assembly 308 Winchester 18" Barrel w/ 15" M-Lok Hand...
  1. {{::image.alternatText}}
Sale 17 at this price
  • {{fee.amount}} {{fee.description}}
Regular Price: $549.99 Save $100.00 (18%)
Ships today from MidwayUSA
Made in USA

Product Overview


  • Complete Bolt Carrier Group
  • 15" M-Lok Handguard
  • 18” Barrel
  • A2 Flash Hider
  • Chambered in 308 Winchester

The AR-STONER™ LR-308 A3 Upper Receiver Assembly chambered in 308 Winchester is ready to be assembled to a complete lower and fired! This LR-308 upper features a mil-spec bolt carrier group, a heavy countour 18” barrel with a melonite finish and lightweight, 15” free float M-Lok handguard.

Securely mount popular accessories directly to the precision M-Lok cutouts. This sleek and ergonomic free float handguard meets shooters needs without sacrificing strength and performance.

The A3 upper assembly comes complete with charging handle, forward assist, ejection port cover, A2 flash hider, bolt and bolt carrier assembly. Supplied without sights, this upper is a great platform for a precision scope or iron sights (both sold separately).

Note: Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.

Made In United States of America
Was this information helpful?


Product Information

{{}} {{attribute.value[0]}} {{attribute.value}}

No {{}}s match your search.

  • {{values}}
Compatible With
{{}} {{compatibleWithAttribute.values[0]}}
  1. {{value}}

Delivery Information

Must Ship to FFL Dealer Yes
Shipping Weight {{selector.shippingWeightDisplay()}}
Ships Alone Yes
Oversized Yes
DOT- Regulated Yes
Carrier Restrictions
  • Cannot ship via air
  • Cannot ship via USPS
  • Cannot ship to PO Box
  • Must ship to Contiguous US
HazMat Product Yes

Customer Reviews

Product Reviews are not compatible with your browser.

Update Your Browser Now!
NOTE: Prices, specifications and availability are subject to change without notice. We reserve the right to correct typographic, photographic and/or descriptive errors.