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Daniel Defense M4A1
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.

Daniel Defense logo
Daniel Defense

M4A1

$1,668.00
$1,551.00
Sale Price
Available California compliant

Daniel Defense M4A1, Upper, Complete Upper Receiver, 5.56 NATO, 14.5" Pinned (16" OAL), Daniel Defense M4A1 FSP Rail Interface System Rail, Carbine-Length Gas System, Surefire SF3P Flash Hider, M16 Profile Bolt Carrier Group, Anodized Finish, Flat Dark Earth and Black 23-004-09376

Key Details
Brand Daniel Defense
Manufacturer Part Number 23-004-09376
UPC 818773021869
SKU DD23-004-09376
Current Stock 6 available
Quantity Updated Apr 24, 2026 3:05 AM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

This Daniel Defense M4A1 FSP AR15 style Upper Receiver Group was built for customers wanting a firearm inspired by USSOCOM SOPMOD Block II. This upper features the M4A1 FSP RIS II picatinny quad rail in Flat Dark Earth, a 14.5" M4 profile barrel, Mil-Spec F-Marked front sight base, Surefire SF3P flash hider / suppressor adapter, A1.5 Fixed Rear Sight, M16 profile full auto bolt carrier group, and Rail Mounted QD Swivel Attachment Point with QD swivel.

Features
  • UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum
  • BARREL: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, 14.5 M4 Profile, Chrome Lined, Mil-Spec Phosphate Coated"
  • GAS SYSTEM: Mil-Spec F-Marked Front Sight Base, Carbine Length, Direct Impingement
  • MUZZLE DEVICE: Surefire SF3P Flash Hider / Suppressor Adapter, Black Ionbond DLC Coating, Pinned and Welded to Barrel
  • BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key
  • SIGHTS: A1.5 Fixed Rear Sight, 6061-T6 Aluminum, Type III Hard Coat Anodized
  • HANDGUARD: Daniel Defense M4A1 FSP Rail Interface System (RIS) II, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized FDE
Specifications
UPC: 818773021869
Manufacturer: Daniel Defense
Manufacturer Part #: 23-004-09376
Model: M4A1
Barrel Length: 14.5" Pinned (16" OAL)
Finish: Anodized
Type: Upper