M4E1 Urban Laramie Enhanced M-LOK Builders Set

M4E1 Urban Laramie Enhanced M-LOK Builders Set


FFL ITEM – Must be shipped to FFL Dealer!
M4E1 Receiver Set, Gen 2 Enhanced M-LOK Handguard, Weapon Works Cerakoted Urban Laramie

Add On Items

Additional discounts when purchased together with our custom builders sets.

Bolt Carrier Groups

Charging Handles

Finish Your Build

Additional savings when purchased along with our Custom Builder’s Sets.

Bolt Carrier Groups

Manufactured by Toolcraft – Lifetime Warranty.

Charging Handles

  • Description
  • Additional information
  • FFL Information
  • Reviews
  • Questions & Answers


M4E1 Urban Laramie Enhanced M-LOK Builders Set

Urban Laramie Cerakote by Weapon Works

The Aero Precision M4E1 Urban Laramie Enhanced M-LOK Builders Set features a M4E1 stripped lower receiver, M4E1 Assembled Upper Receiver, and an Enhanced GEN 2 M-LOK handguard in your choice of either 9″ or 15″.  In addition, we have made available a very limited quantity of Urban Laramie cerakoted Magpul furniture; all custom cerakoted by Weapon Works.   The M4E1 Urban Laramie Enhanced M-LOK Builders set includes everything you need to begin the assembly of your own unique M4E1 firearm sure to impress your friends.

Check out all of our custom cerakoted builders sets here, or the M4E1 Urban Laramie ATLAS S-ONE M-LOK Builders Set.

M4E1 Lower Receiver Features
  • Threaded Bolt Catch Roll Pin – Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). 1/16″ Hex Key required for assembly.
  • Integrated Trigger Guard – Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon.
  • Upper Tension Screw – Allows users to fine tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
  • Threaded Takedown Pin Detent Recess – Allows user to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room).
  • Increased Magwell Flare – Increased the flare of the magwell to aid in quick and efficient magazine changes.
  • Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well.

Click to see the Magpul Urban Laramie Furniture Options

Save up to $20 on Toolcraft Bolt Carrier Groups and Charging Handles when purchased together.
M4E1 Assembled Upper Receiver Features
  •  Integrated Barrel Nut – no special tools required
  •  M4 Feedramps
  •  .250 takedowns
  •  Includes installed dust cover and forward assist.
Enhanced Gen 2 M-LOK Handguard
  • 1pc free float design
  • Anti-rotational tabs
  • Continuous top rail
  • 1.78″ inside diameter
  • Compatible with low profile gas blocks
  • Quick disconnect sling sockets at 3,6, and 9 o’clock
Each Builders Set Includes
  • Urban Laramie Cerakoted M4E1 Stripped Lower Receiver
  • Cerakoted Urban Laramie M4E1 Assembled Upper Receiver
  • Urban Laramie Cerakoted Enhanced Gen2 M-LoK Handguard (9″ or 15″)
Optional Add-Ons
  • Toolcraft Bolt Carrier Groups
  • Charging Handles

Product Information

Manufacturer:  Aero Precision | Weapon Works
Platform:  AR15 – Multi Caliber
Material:  7075-T6 Aluminum (Receivers), 6061-T6 (Handguard)
Finish:  Cerakote | Urban Laramie
Handguard Type:  Enhanced Gen 2 | M-LOK
Handguard Length:  9″ | 15″
Screw Torque:  25in-lbs

Additional information

Weight15 oz

Aero Precision, Weapon Works


Handguard, Lower Receiver, Upper Receiver



Handguard Length

9", 15"




Urban Laramie

FFL Terms and Conditions

– Any items placed on the same order as a controlled item will also be shipped to the FFL. If you would like additional items shipped to you directly, please place them on a separate order.

– Please enter your information or the receiving party’s (the person that will be picking it up) information in “Order Notes” at check out.

– Prices do not include your dealer’s transfer fees.

– To expedite your order, please either you, or your dealer email their FFL to us. Your order will not be processed, until received, and validated.

Email: ffl@armorally.com or submit your FFL Here

There will be a 30% restocking fee on all controlled items returned because of failed background checks.

Federal law requires that you be 21 years or age or older to purchase a stripped receiver or frame. If a frame or receiver can only be made into a long gun (rifle or shotgun), it is still a frame or receiver not a handgun or long gun. However, they still are “firearms” by definition, and subject to the same GCA limitations as any other firearms. See Section 921(a)(3)(b). 18 U.S.C. Section 922(b)(1) makes it unlawful for a licensee to sell any firearm other than a shotgun or rifle to any person under the age of 21.