Aero-Precision:Initial Thoughts

So the good people at Aero-Precision contacted me and asked if I would like to check out one of their products. As you can imagine, there was much arm-twisting involved. (Ha!)

Okay, it was me doing the twisting since upon viewing what was available, I begged them to send me all the things. They said no, but you can’t blame a girl for trying.

What they did send, was held up at my local FFL for a bit, but now it is here!

What's in the box?
What’s in the box?

I know, it says black. But tan is the new black, right?


There are many like it…

So it’s not a perfect match to the tactical toaster, but it compliments it nicely, don’t you think?



I have compared it with the other AR pattern rifles in the house and it does appear that everything is precisely where it should be. I even fit it to one of the existing uppers and it slid together perfectly.



I really wish you could feel it. The cerakote is flawless and so very silky. Yes, you will want to pet my rifle.



Well, once it is actually a rifle, anyway. Every surface is seems impossibly smooth. I imagine this will allow for easy cleaning and reliable performance once it grows up.

So, here’s where you come in. I’ve got several thoughts rattling around in my head for what kind of rifle this should be. You see, even though the BATFEIEIO considers this a ‘firearm’ for which I had to pass a NICS, it is really no more than a very pretty bit of machined aluminum. I suppose I could club game to death with it as it sits, but that seems rather primitive and there are other tools better suited for bludgeoning.

So here’s my criteria:

1) I want this to be a suitable hunting rifle. Keep in mind that I live in Oklahoma, so I don’t run into a whole lot of Moose or Elephants.

2) I want a caliber other that .223/5.56. There are 3 AR pattern rifles in the house that eat that already. I want something different.

3) It’d be great if it could eat out of the magazines I already own

No, this will not be a rifle designed by committee, nor by popular vote. InJennifersHead is not a democracy, and I am Queen of this electron empire, but I want to hear your suggestions. Sell me on your choice caliber, set-up, etc. What makes your choice the bestest, whitetail-killingest of them all? Bonus points if it makes Nanny Bloomers cry.

Also, I’ve never built one of these before. Got any tips and tricks for me? Any must haves? Or must avoids? Any manufacturers out there want to send me a parts kit just to prove that it really is so easy to install that even a Jennifer can do it? (Keep in mind helping my son make a paracord bracelet this weekend resulted in injury complete with bleeding.)

If I use your idea(s), you will be awarded not only my gratitude, but also bragging rights. I may even award you a number of internets not less than one. Maybe I will even come up with other fun stuff as we get further along in the build.

Now if you will pardon me, I need to go pet my embryonic rifle and tell it stories about what it may grow up to become. Please do visit Aero Precision and tell them that I sent you. You can even pick up a lower just like mine and follow along at home. (If you do, please send pictures. I’d like to have them for the family album) So far, I give them my full endorsement.

FTC: Yep, they sent me the lower. They did not tell me that I had to be nice or tell people that it is lovely and awesome. It just really is lovely and awesome. And it smells nice too. Not that you are reading this anyway since your website says you are shut-down. Here’s a Barrycade in your honor.



35 thoughts on “Aero-Precision:Initial Thoughts”

  1. Nice. Building an AR is like legos on crack; so much fun! I’m tempted to recommend you building a 5.45x39mm gun, but as with anything there are pros and cons to it, so here we go:

    – 5.45 is freaking cheap and getting it bulk never seems to be a problem
    – It has a similar trajectory to 5.56
    – It has far superior penetration compared to 5.56 due to being a longer bullet that happens to be steel-core (to help really piss of the people seeking to ban AP ammo)
    – uppers in that caliber should be fairly easy to come by

    – good/reliable 5.45 AR magazines are a little hard to come by (some of a lower quality may require a little tinkering to work right)
    – demand is rising for 5.45 uppers, which is making prices go up to the point that a 5.56 would nearly cost the same
    – piston conversions may have some teething issues (the experience of a friend of mine)
    – when switching from steel case to brass cased ammo, there need to be some serious cleaning done, or the’ll be stoppages.

    But, other than those things listed, 5.45 is some seriously fun stuff. Especially with all that penetration performance.

  2. You want a Whitetail rifle? You want cheap practice? A 7.62×39 upper makes it basically a semi-auto 30-30. Something your petite frame can comfortably handle.

  3. I’m a big fan of .300 AAC. It will use all the same parts as your other ARs except the barrels. That means that you don’t need to invest in a new bolt spares, magazines, etc… It will also fit on any 5.56 compatible upper so you have that going for you. In addition, it’s a really good hunting round with terminal ballistics comparable to a 30-30 or 7.62×39. Finally, if you decide to go wild, it’s a very fun round to run suppressed.

      1. One bit of warning. Don’t get 300 AAC and 5.56 magazines mixed up. With enough force on the forward assist a 300 chamber will accept a 5.56 and a 5.56 (far less often) will accept a 300. The results tend to be… Energetic.

  4. Love the color!
    I’m seriously thinking about getting a matching upper/lower set from them in FDE. The 3 lowers i’ve already purchased from them all fit ‘nice n tight’, without a wobble, on the few uppers here.

    I second the 5.45×39 just for the “shooty on the cheap” factor.

    As far as tips n tricks go … Get yourself a pivot pin installation tooland save yourself some aggravation. I wish there would have been one here last saturday night when i put one of these together. I’m probably just gonna make one before attempting another build.

  5. After looking at the ballistics, I’d go for either a 6.5 Grendel (or .264 LBC, it’s the same thing) or 6.8 SPC. For whitetails or smallish hogs, either one would work well.

  6. Well, if you want something different that uses the same magazines as the other AR’s in the house, you are looking at the 300 AAC or 6×45.

    I recommend the 6×45 wildcat. Simply expand the neck of a 5.56 brass and add a 6mm bullet to the equation, it is quite popular for being a low recoiling game getter. I’m not a fan of the 300 AAC blackout because that round CAN chamber in a 5.56 rifle, and when the trigger is pulled result in a Kaboom. The 6×45 does not suffer from that problem as the bullet is too big.

    The 6×45 won’t chamber in the other rifles, and if you chamber a 5.56×45 in a 6×45 rifle you just get really bad accuracy and a failure to cycle.

  7. Another toss out there for 300 AAC\blackout. A read at Wikipedia sells it better than I can
    Project goals were:

    Create a reliable compact 30-cal solution for AR platform
    Utilize existing inventory magazines while retaining their full capacity
    Create the optimal platform for sound and flash suppressed fire
    Create compatible supersonic ammo that matches 7.62×39mm ballistics
    Provide the ability to penetrate barriers with high-mass projectiles
    Provide all capabilities in a lightweight, durable, low recoiling package

    Uses your mags, bolts lowers, and the rest of your upper except for the barrel. Great medicine on hogs and deer, and give comparable performance to a long barreled 45 auto when you are running the subsonics, but with better aerodynamics and sectional density.

    Gets you full use of all normal 308 caliber bullets for reloading, and solves a lot of the deficiencies of the 556 round.

    I will argue its the round the ar15 has been asking for ever since it was invented.

    Also last I checked midway was running dpms uppers in 300 blackout (not the best upper, but for a hunting rifle not bad) for around $600 ready to roll

  8. Boyd’s just came out with wood laminate furniture. I don’t know your position on wood, but I personally like it on a gun. That might be a fun option. Otherwise, I don’t know enough of anything to make informed recommendations. I do look forward to seeing this come together.

  9. My only tips are hopefully redundant. Be liberal with the masking tape so pliers/punches/etc don’t mar that silky finish, because any of the little buggers with springs will take a good bit more messing around than any logic would indicate they should. A vise is also damned handy for getting the takedown pin/spring in, but can be cheesed with a bit of tape to pin it to whatever your work surface is. was my first build with the couple gotchas I ran into.

  10. You’ll have plenty of deer meat left. The Beowulf hits a bit cleaner than my .50 Muzzleloader because it uses jacketed bullets. My .50 with a 350 gr Maxihunter actually blows out a large exit wound on the off side if it’s a lung shot. If I hit through the shoulders it doesn’t exit but it has a time or two sent bone splinters everywhere. The Beowulf with jacketed bullets should actually do much better.

  11. Based on the criteria you provided, .300 AAC is your best bet. Complete commonality but for the barrel. .300 AAC parent case is the .223/5.56 making reloading easier. Bullet selection all but infinite. Ballistics will do what you need in your area. Just don’t expect sub MOA performance beyond 200 yards.

    Build tips are legion on the net and YouTube. Compare a couple of different videos before starting work. There are a couple of pieces that have to go on ahead of others. Beyond that, it’s easier than Legos and largely fool proof. Drop in trigger units take a lot of hassle out of the build but at a cost. The mil spec triggers are easy enough to install though they won’t perform as smoothly or lightly without some gun smithing help.

  12. I know I’ve already said my piece, but now I’m including links.

    The 6×45 can be loaded to a higher muzzle energy with a bullet that has a better BC. To the point where it can have 1,000 ft/lbs of energy remaining at 200 yards in a bullet with a better sectional density for penetration on game. It shoots flatter and minimizes the risk of a cross platform kaboom because it can’t be chambered in a 5.56 chamber the way the 300 AAC can as happened here:

  13. One last set of pennies to throw in here.

    I have what I call a Meijer rule for ammo, (Meijer being the local 24/7 all in one store for the last century that is everywhere around here. Go in at 3:45AM, buy some spray paint, a pound of pyrodex, some PVC pipe, children’s Tylenol, a bunch of bananas and three bags of chips kinda place. For the sake of our discussion a Super Walmart will also work).

    Basically it goes like this, I wont buy or build any gun unless I can get ammo for it from Meijer. So sure, 500SW would be awesome, but its internet or specialized sporting goods store for ammo. No good if I’m in the middle of nowhere.

    My Meijer has 300AAC by Remington, 556, 7.62×39 and dozens other, but no 6×45, 6.8 Grendel, spcII, or the rest. Few things suck worse than having a great toy, that you cant find ammo for even when ammo isn’t short to begin with.

  14. Better than 7.62x39mm is .300 Blackout.

    Same performance, but it uses UNALTERED 5.56mm magazines, since it’s built on a 5.56mm case. The ONLY parts of a .300 BLK AR that don;t use standard 5.56mm parts are the barrel (obviously) and any ballistic adjustments in your sights (obviously, different trajectory).

  15. Gotta go with .308 for performance, price and availability considerations. Also, you can get a suppressor for this build that will also work quite well on the other 5.56 rifles in the house. Finally, consider one of these on either end of the optic – but order it from your own Amazon page :).


    This has a tool list. I have the set of roll pin starters from Brownells, but I can’t imagine that I paid the current price of $50. Pivot pin installation tool-buy, or make from 1/4″ bolt by drilling a 3/32″ hole near the end. Some have suggested that the assembly work be done inside a large clear plastic bag. 7.62×39 magazines don’t work well in the AR mag well, function seems to be chancy. In addition to the wood block for a work support, consider a canvas bag of lead shot. Note well the assembly of the hammer and it’s spring-the lower legs of the spring must come off the bottom of the coil and lie straight back, exactly horizontal. Otherwise, the trigger pin will not be retained properly. The 300 BLK seems the best option, except for the problem of mixing calibers. If you could use only nickel plated brass for it, that might help.

  17. For your purposes, I would suggest an upper using either a 260 Remington or a 7mm-08. Both are sweet deer hunting cartridges. There are several excellent hunting cartridges readily available for the 7mm-08.

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