Aero Precision M4E1 .300 BLK AR Pistol - 6 in Faxon Match Gunner Barrel, Midwest Industries M-LOK, SB Tactical HBPDW, Kodiak Brown
This custom AR-15 pistol is built on an Aero Precision M4E1 platform and chambered in .300 AAC Blackout. It features a 6 inch Faxon Match Series Gunner barrel with 1:5 twist, a Superlative Arms adjustable bleed-off gas block, and a Faxon 300 BLK BCG. The receivers wear Aero's Kodiak Brown anodized finish, paired with a Midwest Industries free-float M-LOK handguard and an SB Tactical HBPDW PDW brace. A Rise Armament flat single-stage drop-in trigger and BCM Gunfighter MK2 charging handle round out this clean, purpose-built setup.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minor scratches and small blemishes on exterior surfaces.
What’s Included
- Aero Precision M4E1 .300 AAC Blackout AR pistol (as configured)
- 1x 20-round polymer AR-15 magazine marked '300 BLK' and '7.62x35'
Built on an Aero Precision M4E1 lower, this pistol uses matched Kodiak Brown anodized receivers, including a matching safety selector. The lower incorporates an integrated trigger guard and a flared magwell. Factory markings include 'MOD M4E1 / CAL MULTI' and 'AERO PRECISION / LAKEWOOD, WA.'
The heart of the build is a Faxon Match Series 6 inch Gunner-profile barrel with a 1:5 twist and threaded muzzle. A multi-port muzzle brake is properly timed with shims and a jam nut. The gas system uses a Superlative Arms adjustable bleed-off gas block, and cycling is handled by a Faxon Firearms 300 BLK bolt carrier group.
Up front, a Midwest Industries free-float M-LOK rail made from 6061-T6 aluminum provides a rigid, lightweight handguard. The upper and handguard feature a full-length top rail with T-marks, and the handguard is marked with CAGE code 8LQF0.
Controls are well appointed: a Rise Armament single-stage flat drop-in trigger offers a clean break, while a BCM Gunfighter MK2 medium charging handle with a reinforced design provides positive manipulation. The SB Tactical HBPDW brace offers a compact PDW-style, 3-position adjustable setup.
This direct-impingement .300 BLK build is completed in Aero's Kodiak Brown anodized finish over 7075-T6 receivers. Capacity is 20+1, and the included polymer magazine is clearly marked '300 BLK / 7.62x35' for caliber identification. Made in the USA.