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Aero Precision M5E1 308 Enhanced Upper Receiver + 15" Mlok Free Float Gen 2 Rail Combo Set + 308 Flash Hider

The state of the art Aero M5E1 platform starts with the M5E1 Upper Receiver. The M5E1 enhanced upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. Since the rail mounting surface and upper are of the same forging, not only is it a stronger system, but it also provides for easy installation of the gas tube with a pre-aligned gas tube hole. Additional lightening cuts save weight and allow for more efficient cooling.

Easy barrel installation - Simply insert your barrel assembly into the M5E1 upper and tighten it using the provided barrel nut. Then slide your rail on and tighten the screws. Within minutes you have a modular, free-floated rail.

The state-of-the-art Enhanced Upper Receiver combines the handguard mounting platform with the upper itself, condensing the parts needed to mount a free-floated handguard to a mere 8 screws. The Gen 2 proprietary handguards are designed specifically for the Enhanced Series Upper Receiver and are meant to be purchased together.

Handguard is not in retail box.


  • M5E1 Enhanced Upper Receiver
  • M5 Gen 2 Enhanced Handguard of choice
  • Handguard mounting screws
  • Barrel Nut

Aero Precision M5E1 Enhanced Upper Features:

  • Forged from 7075 T6 aluminum
  • Precision machined to our specs
  • M4 feedramps
  • Laser engraved T-marks (Anodized only)
  • .2795” takedown pin holes
  • Accepts standard DPMS .308 components
  • Comes with forward assist and port door installed
  • Handguard mounting platform is forged into the receiver

NEW Aero Precision Gen 2 Mlok Enhanced Handguard Features:

  • Added quick disconnect sling socket at the 3, 6 and 9 o’clock positions
  • Milled additional surfaces along flats to aid with gripping and add visual appeal
  • New profile of the Picatinny Top Rail
  • 1pc free float design
  • Rail is Machined from 6061-T6 Aluminum
  • Built in Anti-Rotation tabs
  • Scalloped rails
  • Continuous top rail
  • 1.72" inside diameter fits most muzzle devices and 1.5" suppressors
  • Compatible with low profile gas blocks

Torque to 65 ft. lbs. with a standard AR15 Armorer’s Wrench

Got a smoking deal on this set last year and built an amazing 18” .308 with it. Came out great, would buy again.


Bought this for an 80% lower build. Fit is great and the handguard attachment is super simple. Aero Precision is top notch as always and fits great with my lower. This was my first purchase from Tom's, but I've already been back for other builds. Prices are far better than other places.


Great product. Great price. Super fast shipping.
Tom's is the Best!!


Recieved my upper and the quality is perfect. Tom's provides great quality, fast shipping and unbelievable pricing. They will be my main go to for parts in the future. Thanks, Paul


Great upper and really fast service. I would buy from Tom's again any time.


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Aero Precision M5E1 308 Upper Receiver + 15" M-Lok Rail - Gen 2 + Flash Hider

  • Brand: Aero Precision
  • Product Code: APAR308554BA
  • Availability: Out Of Stock
  • $899.95
  • Free Shipping


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