M5E1 Enhanced 16" .308 Stainless Steel Complete Upper Receiver

Aero Precision M5E1 16" .308 Stainless Steel Complete Uppers

M5E1 Enhanced 16" .308 Stainless Steel Complete Upper Receiver Product Sku: APPG308534P23

This Complete Upper includes our Gen 2 Enhanced Handguard! Key features include the addition of quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail.


  • M5E1 Assembled Upper Receiver
  • Gen 2 Enhanced Handguard of choice
  • 16" .308 Stainless Steel Barrel
  • Low Profile Gas Block and Mid Length Gas Tube
  • Product comes assembled
  • This complete upper does not include a BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab.

M5E1 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 AR .308 components
  • Comes with forward assist and port door installed
  • Handguard mounting platform is forged into the receiver

NEW Gen 2 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
  • 1.78" inside diameter fits most muzzle devices and 1.5" suppressors
  • Compatible with low profile gas blocks

16" .308 Stainless Steel Barrel Features:

  • Twist: 1 in 10
  • Threading: 5/8 x 24
  • Material: 416R Stainless Steel
  • Finish: Bead Blasted
  • Gas Block Journal: .750
  • Gas System Length: Mid
  • Weight: 35.36oz
  • DPMS Barrel Extension
  • HP and MPI Tested
Made In America? Yes
Platform M5
Series M5E1
Caliber .308 Winchester
Barrel Length 16"
Weight(s) 12" KeyMod: 65.78 oz / 12" M-LOK: 65.78 oz / 12" Quad Rail: - / 15" KeyMod: 67.68 oz / 15" M-LOK: 67.68 oz / 15" Quad Rail: -
Other No

Customer Reviews

6 Item(s)

So awesome I bought a 20” to keep it company Review by Ryan
I bought a 16” to go with an Aero M5 lower and was so impressed with it I bought the same upper in 20”. Aero consistently impresses. (Posted on 4/25/2018)
Quality Product Review by Daniel
Aerp Precision AR products are a good quality alternative between other low and high priced products. I spent a few $$ extra for my .308 build to ensure I was not going to run into problems associated with low cost manufacturers products. Also, I didn't have to spend big bucks to get high quality. I'm very pleased. (Posted on 10/13/2017)
Great upper Review by Jeremy
Bought this upper after purchasing their 308 complete lower with a black phosphate BCG and charging handle for a complete aero build. Shot 100+ rounds without a single hiccup. Since im in california I decided to go featureless and was able to ring a man sized steel target out to 200 yards easily with a no zoom red dot sight. Awesome rifle! Cant wait to buy their compensator that they sell for their 308 rifles. (Posted on 4/25/2017)
Kick A$% Review by Aaron
Built a rifle for my dad (lucky him) using the 16" stainless barrel, 15" FDE M-LOK, Aero Lower, Magpul UBR (adds weight to butt end of rifle to balance out the build), and Aero nickel boron BCG. Rifle came in just under 8lbs and with 1x4 scope rifle is approx 9lbs. Rifle shoots as straight as the person pulling the trigger (with firedot covering the bulls-eye @ 100 yards still puts em in there). Rifle is for hunting and casual shooting. So far, 168 grain Hornady is the best performing ammo off the shelf. (Posted on 12/2/2016)
Lucky me Review by David
I ordered this in 16" stainless with their new keymod rail and enhanced upper. It was on sale and I kinda needed one for a matching complete lower I had layin around. It shipped very quickly and was well packaged. It's very impressive, but if you're familiar with Aero Precision, you already know that. Fit and finish is second to none. High quality craftsmanship with a great eye for asthetics. Surprisingly light for a complete 308 battle rifle. If you need a great 308, and like awesome stuff, stop reading this review and BUY IT NOW! Great job Aero! You never disappoint. (Posted on 10/19/2016)
Good lookin product Review by Charley Deal
Came packaged good. I think this thing looks awesome, I can't wait to get it mounted on the matching lower! God bless America (Posted on 10/15/2015)

6 Item(s)

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