Aero Precision M4E1 (5.56mm) Semi-Auto Pistol

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M4E1 10.5” Complete Pistol W/ SBA3 Pistol Brace


If a short lightweight AR Pistol is on the mind, look no further. This 10.5” complete pistol was built to be run hard and put up wet. Featuring an M4E1 receiver set for easier reloads and a more rigid base for the heart of the gun. Tried and true M16 profile, staked and phosphated BCG along with a 10.5” CMV barrel. Combine that with the robust ATLAS S-One rail and a VG6 Delta muzzle brake and you’ve got yourself a complete package.

Upper Features:

  • Upper: M4E1 Threaded Upper Receiver
  • Barrel: 10.5″ 5.56 NATO, Carbine-Length, 1:7 Twist, QPQ corrosion resistant finish
  • Handguard: ATLAS S-One 9” MLOK Rail
  • Gas System: Carbine Gas System
  • Bolt Carrier Group: M16 Cut, 8620 Steel, Phosphate Finish, Properly Staked, Carpenter 158 Bolt, HP and MPI Tested
  • POF Tomahawk Ambidextrous Charging Handle

Lower Features:

  • Lower: M4E1 Lower Receiver with flared magwell and upper tension screw
  • Lower Parts Kit: Standard AR15 Lower Parts Kit
  • Buffer Kit: Standard Mil-Spec AR15/M4 Buffer Kit
  • Brace: SBA3 Adjustable Brace
  • Grip: MAGPUL SL Pistol Grip

Atlas S-One Handguard

Machined from 6061-T6 Aluminum, the S-ONE line of handguards are designed with size and weight in mind, providing the perfect handguard for your lightweight build. 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.

The new Aero Taper Lock Attachment System (ATLAS) is both functional and aesthetically pleasing. It features 2 mirrored tapered locking nuts that provide evenly distributed clamping pressure across a custom engineered barrel nut with use of a turnbuckle screw. A ratcheting detent further secures the design while providing positive registration during installation. By design, the even pressure of the ATLAS system avoids distortion of the handguard often seen with current applications during installation.


Additional Information
ManufacturerAero Precision
TypePistol: Semi-Auto
Caliber5.56mm NATO
ReceiverAero Precision M4E1
Charging HandlePOF-USA Tomahawk Ambi Charging Handle
Handguard9″ Atlas S-ONE M-LOK
Pistol BraceSB Tactical SBA3
Barrel Length10.5″
Overall Length26″ Collapsed; 29″ Extended
Weight5.12 lbs.
MagazinesOne 30-Round Magpul PMAG
Product SKUAPCR640338

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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