Aero Precision AR15 – The Perfect Custom Construct?

You know what they say: opinions are like… AR15s, everyone has one, and they are all different. Billions of them and all different. With so many AR15 options out there, from the really inexpensive, to the customized and exorbitantly expensive, the choices are endless. There also is a way to get a great AR15 and for a really good price: build it yourself. Building a gun around the Aero Precision AR15 upper and lower receivers is one of the best ways to accomplish that mission.

It’s very easy to build and assemble an AR15 by yourself, with the parts and components you have chosen. It can often be cheaper than what a comparable complete gun would be right off the shelf. With this approach, you can either get more of the gun for less or get the gun exactly the way you want it. And even then, sometimes for less. We call that more bang for your buck. Sorry. I could not resist.


Why a Custom AR Build?

Exhibit Alpha: my build based around Aero Precision AR15 receivers is what I would consider the almost perfect build. Of course, this comes back to the part about opinions.

This might be a touchy subject for some people, but hear me out. Can one spend more money on parts and components of certain brands? Of course. Will that always end up creating a “better” gun? Mmmm, arguably not.

Read Next: How to build an AR-15: A beginner’s guide

The Aero Precision AR15 Bolt Carrier Group

Aero Precision also manufactures really good bolt carrier groups (BCG). This is one of the most important components in any AR build. It is the part that really makes the gun go “bang.” In my military and civilian experience, a really great gun with a bad BCG makes life miserable.

For my tour in Afghanistan, I got lucky. At least, I thought I did. I was issued a brand-new, out-of-the-box Colt M4. However… the BCG and the upper receiver did not like each other. The friction was very high and something was off. It ground like sandpaper, and I had to keep it overly lubricated. Sometimes, it was so sticky, it would not seat the bullet properly when charging the gun to load it. No amount of work ever seemed to be quite right or do much of a difference. Lesson learned.

Aero Precision makes really good nitride BCGs and for a really great price. Are there more expensive BCGs out there? Again, the answer is yes. Are they that much better? Probably not. I have two of these, as well. Both of them are smooth, have a great fit and tolerance inside the upper receiver. I have never had any issues with them.

One major recommendation that I would make at this point, especially when it comes to BCGs, is that nitride finishes on gun parts are much better and more desirable than phosphate finishes. They do tend to cost a bit more, as they are a higher quality finish. Nitride is smoother, so it has more of a “natural” lubricant quality. This is beneficial for both corrosion resistance and smoothness of function. Phosphate is not as smooth and can cause a bit more friction.


Aero Precision AR15 Enhanced Buffer Kit

Another part in an AR15 often taken for granted is the buffer spring. This right here is a little nugget of knowledge that is going to make your day: Aero Precision offers buffer springs and kits in varying weights. What does this mean?

In case you don’t know, the buffer is the part of the rifle that absorbs the recoil once the bullet is fired. It’s why AR15s are extremely manageable to shoot and have very little felt recoil. In addition, with a heavier buffer spring you can absorb more recoil, and depending on the type of AR15 that you’re building this is desirable.

For example, guns that are over-gassed — or in my case, an AR with a short barrel — and have a heavier buffer tube will absorb more recoil. This is preferable since both the reduced weight and the shorter barrel will affect the felt recoil and the performance of the rifle itself. Aero Precision offers four weights of recoil absorption in their buffer kits.

The handguard is made by BCM, Bravo Company USA. This is another company that makes really good components (and guns). Their free-float handguard is a solid option and easier to work with than some other brands.

The barrel is made by Rosco Manufacturing, which makes really good barrels. It is an 11.5″ barrel, with a mil-spec 1:7″ twist. A 1:7″ twist is preferable, in my opinion, over a 1:9″ twist, especially on the shorter barrel.

The Timney trigger with a really smooth, light(ish) four-pound trigger pull, is worth its weight in gold… and it doesn’t come with a hefty golden price tag. I guess that means it’s worth much more than its weight in gold.

The SB Tactical pistol brace, Surefire Scout gun light, Magpul back-up sights, and other Magpul accessories, are all industry standard, and not terribly expensive.

One component where I really splurged is the Aimpoint Micro T-2 red dot. It’s very pricey, but one of the absolutely best red dots on the market today. Of course, there are other very good and much cheaper options out there.

It might be hard to argue in favor of one gun brand over another or one custom AR15 build over another. With that in mind, I think my Aero Precision AR15 build is close to the perfect build. Pound for pound and dollar for dollar it stacks up.

If you have any questions about any of the parts or details of this gun build, you can contact me at: [email protected] I would be happy to chat and kick around new ideas.

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