California Access Notice

Are you 18 years old or older?

California restricts viewing this site to those over 18.

No
FFL-compliant checkout Live inventory verification Pickup / transfer ready
(310) 275-7272 beverlyhillsguns.com
Catalog
0

Your cart is empty

Total $0.00
View Cart
Sign In Create Account
0
Browse Beverly Hills Guns
Navigate by category, brand, and customer workflow.
Store Pages
Storefront Home Browse All Products Cart Sign In
Shop Categories
Guns
Hand Guns Sporting Long Guns Used Hand Guns Used Long Guns NFA Products Black Powder Firearms Airguns
Ammunition
Ammunition Reloading Equipment Targets Safety/Protection
Accessories
Holsters/Pouches Magazines Grips/Pads/Stocks Scope Mounts Scopes Sights/Lasers/Lights Hard Gun Cases Soft Gun Cases/Packs Cleaning Equipment Flashlights & Batteries
Parts
Parts Barrels/Choke Tubes Upper Receivers/Conv Kits Upper/Conv Kits-High Cap SBR Uppers Black Powder Accessories
Store Pages
CCW/Training Purchasing Pricing Appointments
Company
About Contact
Store & Compliance
Support firearm-compliant checkout, store pickup, FFL transfers, and inventory-aware merchandising in one shell.
  • Live inventory validation before checkout
  • FFL-aware firearm fulfillment
  • California restriction messaging
  • Mobile-first browse and search flows
Search Beverly Hills Guns
Search by manufacturer, model, UPC, or SKU.
SOLGW M4-L89 URG 14.5" 5.56 P/W HUX
Thumbnail 1
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

Upper Receivers/Conv Kits
Sons of Liberty Gun Works

M4-L89 Upper Receiver Group

$950.00
Out of Stock

Sons of Liberty Gun Works M4-L89 Upper Receiver Group, Upper Receiver, 5.56 NATO, 14.5" Barrel with Pinned and Welded HUXWRX Muzzle Device (16" OAL), Fits AR-15, Matte Finish, Black, Includes 13.75" L89 Rail, Does Not Include BCG or Charging Handle U-M4L89-556-145-HUX

Key Details
UPC 657628673019
Part Number U-M4L89-556-145-HUX
RSR Stock # SOLGWUM4L89556145HUX
Manufacturer Sons of Liberty Gun Works
Continue Shopping
Live Distributor Check
Checking RSR live availability and restriction status...
Purchase Requirements
  • California compliance or distributor restriction review may apply.
  • Final availability is confirmed against the distributor during cart and checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

Sons of Liberty Gun Works is a manufacturer of quality firearms and parts, perfect for your next build, next competition, or next line of defense. Their small parts fit most mil-spec firearms. These uppers are built with L89 7-sided rails, forged uppers, and Liberty Fighting Barrels. There are multiple options of lengths and muzzle devices.

Features
  • 14.5 5.56 NATO Barrel"
  • 13.75 L89 Handguard"
  • HUXWRX Flash Hider
  • 7-Sided M-LOK Slots
  • Integral QD's at Barrel Nut on Both Sides
  • Drivelock Barrel Nut System
Specifications
UPC: 657628673019
Manufacturer: Sons of Liberty Gun Works
Manufacturer Part #: U-M4L89-556-145-HUX
Model: M4-L89 Upper Receiver Group
Barrel Length: 14.5" Pinned (16" OAL)
Finish: Matte
Type: Upper