Due to high demand and increase of orders, it is possible your order will be delayed in processing. We are working to have all non firearm orders shipped within 7 business days.
Home > Shop By Brand > Aero Precision >
  • M4E1-T Complete Upper, Special Edition: Thunder Ranch, 14.5" -
  • M4E1-T Complete Upper, Special Edition: Thunder Ranch, 14.5" -
  • M4E1-T Complete Upper, Special Edition: Thunder Ranch, 14.5" 5.56 Mid, 12" ATLAS R-ONE HG w/Pinned VG6 Delta - FDE Cerakote - AERO APAR700764M5
Aero Precision

M4E1-T Complete Upper, Special Edition: Thunder Ranch, 14.5"

The Thunder Ranch product line is a joint venture between Aero Precision and Thunder Ranch. Aimed to achieve Clint Smith's ideal purpose built "Ultimate Carbine", these products include key features requested from Clint Smith himself but with an Aero Precision flare. Like everything surrounding the Thunder Ranch name, you get exactly what you need - nothing more and nothing less.

This complete upper includes our popular ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real estate to accommodate any attachment needs the end user may have. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

**** PLEASE NOTE*** Limit 1 Per Person. Any additional orders for customers will be cancelled without notice.




Item# Description Availability Qty
Break		 MSRP Price Choose Qty
AERO APAR700754M5
M4E1-T Complete Upper, Special Edition: Thunder Ranch, 14.5" 5.56 Mid, 12" ATLAS R-ONE HG w/Pinned VG6 Delta - Anodized Black
 Out Of Stock / Not Available For Back Orders 1 $574.99 $550.00
AERO APAR700764M5
M4E1-T Complete Upper, Special Edition: Thunder Ranch, 14.5" 5.56 Mid, 12" ATLAS R-ONE HG w/Pinned VG6 Delta - FDE Cerakote
 Out Of Stock / Not Available For Back Orders 1 $599.99 $565.00

Includes:

  • M4E1 Threaded Assembled Upper Receiver, Special Edition: Thunder Ranch
  • 12" ATLAS R-ONE Handguard of choice
  • 14.5" 5.56 Mid-Length CMV Barrel
  • Low Profile Gas Block and Mid Length Gas Tube
  • VG6 Precision Delta 556
  • Magpul MBUS Front/Rear Flip-Up Sights - Black
  • Product comes assembled
  • This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab
  • The muzzle brake that comes with this complete upper receiver is pinned, and welded to this barrel. Per the National Firearms Act, the muzzle brake MUST be pinned and welded to achieve the necessary 16" as defined by the ATF for a rifle build.

M4E1 Thunder Ranch Threaded Upper Receiver Features:

  • Thunder Ranch Logo on tang
  • No Forward Assist
  • New enhanced forging that gives the upper receiver a "billet look"
  • New picatinny profile that blends seamlessly with our Enhanced Series Handguards
  • M4 Feedramps
  • .250 takedown pin holes
  • Laser engraved T-marks
  • Includes port door installed

ATLAS R-ONE Handguard Features:

  • Full top picatinny rail for optional attachments
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Compatible with low profile gas blocks
  • 1.3" Inside diameter
  • 1.5" Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels
  • Learn More about our NEW ATLAS Handguards

14.5" 5.56 Mid-Length Barrel Features:

  • Chamber: 5.56
  • Length: 14.5"
  • Twist: 1 in 7
  • Threading: 1/2"x28
  • Material: Chrome Moly Vanadium
  • Finish: QPQ corrosion resistant finish both inside and out
  • Gas Block: .750
  • Gas Port: .0785
  • Gas System Length: Mid
  • Weight: 26oz
  • M4 Barrel Extension
  • HP and MPI Tested
Made In America?Yes
PlatformAR15
SeriesATLAS
Caliber5.56 NATO
Barrel Length14.5"