FREE SHIPPING & FREE RETURNS*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Aero Precision M4E1 8in .300 CMV Barrel Complete Upper Assembly with Flash Hider
As Low As $440.99 Save 19%
View Product
Compare (0)
Most Helpful Positive Review Great fit and finish!
Looks great and feels great, quality is right there with BCM. No cons that I can think of, just an awesome upper for the price and in general. And Optics Planet customer service can't be beat. Looking forward to the range!
Most Helpful Negative Review Aero precision upper
I am happy with the upper. However, not happy with the process. I ordered it for my build and it didn't ship for almost 5 weeks. When I ordered it I was glad it had free 2 day shipping. 2 day shipping after waiting 5 weeks is a joke. By the way, it took 5 days to get it after it shipped. This won't ...
Read More...
Show
Sort by
Filter by

AP Quad Rail

by lab, Verified Owner from NC, United States Written on August 7, 2025
Flawless upper. My only complaint is a personal preference… I got the 8in so with the way I hold my rifle the quad rail feels very chunky because of the picatinny. Besides this, I love it. Just gonna replace the rail.
Pros:
  • color
  • Smooth & Crisp operation
Cons:
  • Chunky
Best Used for:
  • cans
Would recommend: Yes
Was it helpful to you? Yes | No

Awesome quality

by Brandon, Verified Owner from NC, United States Written on November 10, 2024
Aero never disappoints with the quality and looks. This upper is beautiful and feels great in the hand. I have the same hand guard put in .223 as well. You will not be disappointed.
Would recommend: Yes
Was it helpful to you? Yes | No

Best option, dollar for dollar

by PotatoPlinker, Verified Owner from OR, United States Written on March 4, 2024
Cheaper options and better options are certainly available, I am convinced that these uppers are the best value for money. I have purchased many Aero uppers over the years and have never had any complaints. Great product, great price, what's not to love.
Pros:
  • Quality
  • Affordable
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Aero 300 upper

by LC, from NC, United States Written on December 15, 2023
Customer service and shipping is superb only 120 rds down range so far so good.
Would recommend: Yes
Was it helpful to you? Yes | No

.300 Blackout 8” Upper

by ASk, Verified Owner from NC, United States Written on March 30, 2023
I believe this was already addressed k. The questions section but the product photo of the 8” black enhanced upper is NOT accurate. The enhanced handguard on the 8” black enhanced upper is appropriately approximately one inch shorter (7”)than the barrel length.

The condition of the upper received however had the appearance of being banged around bit prior to being shipped. The flash hider had significant wear/tool marks with exposed bare metal possibly due to careless installation as did several small areas along the upper receiver. Not an issue for my purpose however other’s OCD will definitely take notice.
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Badass! Perfect

by Bubba, Verified Owner from WA, United States Written on December 17, 2022
I ran this as soon as I unboxed it. I slapped on a carry handle and Mbus front sights. I think I’ll keep it that way so I don’t have to mess with batteries. I added a light and fore grip after the first round. Second range day, I ran some hollow points and hunting rounds through a pumpkin; tons of fun to shoot and smooth. Only issue I had was with the handguard. After the second range day, the guard was wobbly, wasn’t walking because of the Enhanced Handguard. I had to disassemble the handguard and add loktite to the screws. The EH attaches directly to the upper receiver.
Would recommend: Yes
Was it helpful to you? Yes | No

300blk upper

by Tucker, from TX, United States Written on January 6, 2022
Seen mixed reviews about optics planet. Bought a complete Aero upper that qualified for free 2 day shipping. Excellent product received within 2 days so I would have to recommend and will be purchasing again. Aero Precision speaks for itself, definitely best bang for your buck
Would recommend: Yes
0 of 2 found the following review helpful.
Was it helpful to you? Yes | No

Aero M4E1 Upper

by War Poet, from NC, United States Written on June 6, 2021
Product: This is a solid upper. Looks and feels great (as long as you like a little more girth in your handguards). Fit and operation with multiple lowers has been flawless. Aero has great products at a good price point. Overall, it’s simply a great mid-level upper. Process: As always, fast shipping from OP. Product was properly packaged to ensure no damage during shipping.
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Great upper

by Robert S., Verified Owner from LA, United States Written on May 1, 2021
Great looking upper , light weight fitted to my ruger 556 pistol lower nice and tight . Accurate at 50 yds super and subs shot great .. suppresor Q.D adapter worked but is close to hand guard. 6 hrs after receiving 200 pound boar hog down . Extremely happy optics planet is great . 300 aac fan
Pros:
  • Quality,price and fit
Cons:
  • None yet but will let you know if there end up being any
Best Used for:
  • Hog and Coyote eradication.
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No

aero upper

by Robert S., Verified Owner from LA, United States Written on April 30, 2021
ordered a aero precision upper with 2 day free shipping. figured it would take a week or two ,boy i was wrong 48 hrs from the the time i purchased to it was delivered to my house. you can't be that. 4 stars because i haven't got to fire it yet. will post another review of item in a few days.
Pros:
  • g
Cons:
  • None
Best Used for:
  • Hog and Coyote eradication.
Would recommend: Yes
0 of 4 found the following review helpful.
Was it helpful to you? Yes | No
There are no reviews that match your criteria. Would you like to review this product?