Aero Precision M4E1 Enhanced 5.56 NATO AR-15, 16 inch, Custom Geometric Camo Cerakote, Primary Arms 2.5X ACSS Optic
This Aero Precision M4E1 Enhanced stands out with a multi-tone geometric camouflage Cerakote finish and a well-chosen set of installed upgrades. It features the M4E1 Enhanced upper and Aero Enhanced M-LOK Gen 2 free-float handguard with a continuous top rail, a 16-inch 5.56 NATO barrel, and a direct-impingement operating system. A Primary Arms PAC 2.5X prism optic with ACSS reticle and OPMOD flip-up backup sights are installed, alongside enhanced controls and accessory mounting already in place.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in great shape. There are some minor scratches and blemishes present. The bore is clean and shiny.
What’s Included
- 1x 30-round magazine
- Primary Arms PAC 2.5X prism optic with ACSS reticle (installed)
- OPMOD polymer flip-up front and rear sights (installed)
- Short polymer vertical foregrip (installed)
- BCM M-LOK QD sling mount (installed)
- Ambidextrous/extended charging handle (installed)
- Flat-faced skeletonized aftermarket trigger shoe (installed)
- Extended bolt release/catch (installed)
- Loose rubber buttpad (not installed)
The M4E1 Enhanced architecture pairs Aero Precision’s enhanced upper with the Aero Enhanced M-LOK Gen 2 handguard for a true free-float setup and a continuous 12 o’clock Picatinny rail. The lower includes an integrated trigger guard, a flared magwell, and a threaded bolt-catch pin for secure assembly and streamlined handling.
Its 16-inch, threaded 5.56 NATO barrel is set up with a hybrid pronged/compensator-style muzzle device. The rifle runs a direct-impingement, semi-automatic AR-15 system and uses standard 30-round magazines for a 30+1 capacity.
A Primary Arms PAC 2.5X prism optic with the ACSS reticle is installed for clear, fixed-magnification aiming. OPMOD-branded polymer flip-up front and rear sights provide backup aiming capability already mounted to the top rail.
Usability upgrades include an ambidextrous extended charging handle, a flat-faced skeletonized trigger shoe, and an extended bolt release/catch for positive control. A short polymer vertical foregrip and a BCM M-LOK QD sling mount are installed on the handguard, with ample M-LOK slots remaining for additional accessories.
The rifle wears a multi-tone geometric camouflage Cerakote finish across the receivers and handguard. It is configured with a 6-position M4-style collapsible shoulder stock mounted on a carbine receiver extension, and an A2-style pistol grip for a familiar, duty-ready layout.