Aero Precision M4E1 Builder Set w/15" Atlas S-One M-LOK Handguard (War-Torn Acid Bronze)

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This Builder Set features an M4E1 Threaded set with a War-Torn Acid Bronze Cerakote finish coated by MAD Custom Coating.

This package deal includes the finished pieces you need to assemble your own War Torn Acid Bronze Cerakote M4E1 Rifle, including an M4E1 Threaded Upper Receiver, M4E1 Lower Receiver, and our ATLAS S-ONE Handguard of choice all finished in War-Torn Acid Bronze Cerakote. Stand out at the range with a unique and eye-catching build. This is a one time offer for this finish – once they are gone, they are gone!


  • M4E1 Threaded Upper Receiver finished in War-Torn Acid Bronze Cerakote. The upper receiver is assembled and includes the forward assist, dust cover and barrel nut.
  • 15″ ATLAS S-ONE M-LOK Handguards finished in War-Torn Acid Bronze Cerakote (Mounting Kit Included)
  • M4E1 Lower Receiver finished in War-Torn Acid Bronze Cerakote

Please note: The War-Torn Acid Bronze finish is a stylized Cerakote finish that features areas of simulated acid etching that creates dimension and texture on parts of the finish. These are intentional and not considered blemishes.

Additional Information Content

Modern Warriors

We started Modern Warriors for the sole purpose of providing a less expensive way to enjoy our love of buying and shooting some really cool stuff. What started as a hobby has turned into a business where we have developed the experience and ability to help you enjoy our same hobby and save you money in the process.

We specialize in tactical weapons, including suppressors, short barrel rifles and full auto weapons. We have routine experience in shooting the weapons we carry, so if you want our opinion on how a weapon operates, we will gladly provide it. We also have expertise working with licensed professionals in setting up gun trusts, which is an ideal way of purchasing, owning and operating any weapon restricted by the National Firearm Act. Don’t let the word “trust” scare you. It is very easy to set one up if you have the right help.

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