Aero Precision M4E1 5.56 NATO AR Pistol, 11.5 in Threaded Barrel, ATLAS R-ONE M-LOK Handguard, SB Tactical Brace
This Aero Precision M4E1 AR pistol stands out with an 11.5 in threaded barrel, a free-floated ATLAS R-ONE M-LOK handguard, and Aero's enhanced receiver features. It includes an SB Tactical arm brace and an ambidextrous charging handle with extended latches, all in excellent overall condition with a clean, sharp bore. Aero rollmarks note Lakewood, WA on the receiver and Tacoma, WA on the handguard.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal markings from previous handling or use. Please refer to the photos for a close look at the external surfaces and finish.
What’s Included
- Aero Precision M4E1 5.56mm NATO AR pistol with 11.5 in barrel
- 1x 30-round Magpul PMAG GEN M3 windowed polymer magazine (5.56x45)
- M-LOK Picatinny rail section installed at 6 o'clock on the handguard
- Ambidextrous charging handle with extended bilateral latches (installed)
- SB Tactical arm brace (installed)
The M4E1 lower brings practical enhancements, including an integral trigger guard and a flared magwell for easy magazine changes. It uses a threaded bolt-catch pin and an upper-to-lower tensioning screw, and its selector markings support both 90° and 45° throws.
The upper receiver features a forward assist, brass deflector, and ejection-port cover. The 11.5 in barrel is threaded and fitted with an A2-style flash hider. This pistol operates via a gas-operated, direct-impingement, semi-automatic action chambered in 5.56mm NATO.
The Aero Precision ATLAS R-ONE free-float handguard is made from 6061-T6 aluminum and provides a continuous top Picatinny rail with multiple M-LOK slots. A Picatinny rail section is installed at the 6 o'clock position for added mounting flexibility.
Controls and furniture are set up for confident handling, with an ambidextrous charging handle featuring extended bilateral latches, a polymer pistol grip with textured panels, and an SB Tactical arm brace with a rear strap on a carbine receiver extension. The pistol is finished in matte black and has a 30+1 capacity.
Aero rollmarks identify Lakewood, WA on the receiver and Tacoma, WA on the handguard. This U.S.-made pistol arrives with a Magpul PMAG GEN M3 windowed 30-round magazine for 5.56x45.




