Brownells 75th Anniversary - A Shooting Heritage
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High-End, Nearly Complete AR Includes Everything You Need - Nothing You Don't

This fully-assembled, nearly-complete, Brownells-exclusive rifle from Aero Precision is constructed using second-to-none components to ensure the highest level of accuracy and reliability, while leaving off the handguard and buttstock – saving you money to buy the accessories you want!

Build your Dream AR-15 from this high quality custom rifle platform without wasting money on components you don't want. Simply choose the free-float handguard that fits your needs, sights, and a mil-spec buttstock, snap them on and head to the range.

Shop mil-spec barrel nut compatible free-float handguards

M4 Aero Precision Upper Receiver

  • Mid-Length Gas & Barrel System Ideal for free-float handguards 
  • 16” 5.56 NATO, 1:7 Twist Barrel with M4 feed ramps 
  • Barrel is machined from 4150 Chrome Moly Vanadium steel to a Government, mid-length profile, then treated with a QPQ corrosion-resistant finish 
  • ½-28 barrel thread pitch includes an installed A2 flash hider 
  • M16 Bolt/Carrier Group features 8620 steel carrier with phosphate finish & chrome lining, and has a properly-staked Gas Key 
  • Bolt machined from Carpenter 158 – High Pressure Tested & Magnetic Particle Inspected

Aero Precision Gen 2 Lower Receiver 

* While supplies last. Prices and availability subject to change without notice. FFL transfer fees may apply. All federal, state, and local laws and ordinances apply. Not available for sale online to CA, CT, DC, MA, NY & NJ. If you live in a restricted area but have proper authorization to purchase please call us at 800-741-0015 and ask for customer service. Rifle comes fully assembled (without handguard and buttstock). 

SPECS: Receivers – Forged 7075 T6 Aluminum Receivers.  Gen2 Lower Receiver includes flared magazine well and upper tension screw to remove upper/lower play.  Finish – Matte black hard anodized.

Bolt Carrier Group – Carpenter 158 Bolt, 8620 Carrier and mil-spec components.  Bolt is High Pressure Tested, Magnetic Particle Inspected and shot-peened.  Finish – Phosphate with chrome lined carrier & gas key.

Barrel – Chambered in 5.56x45mm NATO.  1-7 Twist.  Profile – Government.  Gas System – Mid-length with installed gas block and tube.  Threads – ½-28.  Finish is QPQ nitride. 

Receiver Extension – Mil-Spec diameter buffer tube assembly with carbine buffer.

AERO PRECISION - OEM MID-LENGTH 16" RIFLE

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