Aero Precision M4E1 .300 BLK AR-15 Pistol, 10.5 in Faxon Barrel, Daniel Defense Quad Rail, SBA4, TriggerTech
This AR-15 pattern pistol is a custom .300 AAC Blackout build centered on Aero Precision M4E1 receivers and finished in a multi-tone camouflage. It combines a Faxon 10.5 in barrel with an adjustable gas block and a SilencerCo three-port muzzle brake, a Daniel Defense free-float quad-rail handguard, and an SB Tactical SBA4 brace. Premium components include a Toolcraft DLC-coated bolt, Aero ambidextrous charging handle, Geissele safety, and a TriggerTech single-stage trigger.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are markings from previous handling and use. The firearm has a DIY rattle-can multi-tone camouflage paint job. Please refer to the photos for close-ups of the finish and surfaces.
What’s Included
- SB Tactical SBA4 pistol stabilizing brace (installed)
- Daniel Defense free-float quad-rail handguard with full-length Picatinny top rail (installed)
- SilencerCo three-port muzzle brake (installed)
- Magpul MOE pistol grip (installed)
- 1 Magpul PMAG GEN M3 windowed 30-round magazine
Built on an Aero Precision M4E1 lower with an Aero Precision slick-side upper, this pistol deletes the forward assist while retaining a dust cover and brass deflector. It uses a direct-impingement, rotating-bolt operating system and is chambered in .300 AAC Blackout (7.62x35mm). Capacity is 30+1, and the firearm was made in the United States.
The 10.5 in Faxon barrel is threaded and paired with an adjustable gas block to tune the .300 BLK system. A SilencerCo three-port muzzle brake is installed. The Daniel Defense free-float quad rail provides robust rail space with a continuous Picatinny top rail running from the receiver across the handguard.
Ergonomics and control parts are upgraded throughout: an SB Tactical SBA4 adjustable brace with Velcro strap, a Magpul MOE pistol grip, an Aero Precision ambidextrous charging handle, and a Geissele safety selector are all installed. A TriggerTech single-stage trigger delivers a clean, consistent pull.
Internals feature a Toolcraft DLC-coated bolt. The custom multi-tone camouflage finish extends across the receiver set and brace. This pistol is sold without sights or optics.




