Aero Precision M4E1 Enhanced Build Set w/ 9″ M-Lok in Patriot Brown /w GeoHex Camo


In stock


These builders sets are created in a limit run from out M4E1 lineup. Featuring a Patriot Brown Cerakote job and topped off with an intricate GeoHex Cam pattern applied by Blowndeadline these sets offer subtle coloring with unique pattern. These sets will make a unique addition to your inventory for customers looking to start their next build!

This builder set includes the finished pieces needed to assemble a BDL GeoHex Cam Patriot Brown M4E1 Rifle. The set includes an M4E1 Enhanced Upper Receiver, M4E1 Lower Receiver and our Gen 2 Enhanced Handguard all with this exclusive finish. This finish is available one time only and in limited quantities, so get it while you can!


  • M4E1 Enhanced Upper Receiver finished in BDL GeoHex Cam Patriot Brown. Upper receiver is assembled and includes the forward assist, dust cover and barrel nut.
  • 9″ Enhanced Gen 2 M-LOK Handguard finished in BDL GeoHex Cam Patriot Brown
  • M4E1 Lower Receiver finished in BDL GeoHex Cam Patriot Brown


Local Pickup: Customers that order FFL Items (firearms or other serialized items) and select “Local Pickup” as their delivery method will be required to complete a Form 4473 and background check prior to taking possession of their order.  All firearms or FFL Items that are purchased from Western Mountain Sports have Form 4473 and NICS checks included, there is no additional fee to complete this process. 

Shipping: Federal law requires this product to be transferred through a licensed FFL dealer. Western Mountain Sports requires a copy of the dealer’s FFL for verification and shipping. It’s the customer’s responsibility to notify the dealer of the order and to ensure their chosen FFL will accept the transfer. For more information, please see our Shipping & Local Pickup policy.


Additional information

Shipping to FFL Dealer Required





Patriot Brown Cerakote


Gen 2 Enhanced 15"

Receiver Material

7075-T6 forged aluminum


5.56 NATO / .223, Multi


Multi Cal


GeoHex Cam Pattern