Ar 15 Uppers Complete

Erowid Library/Bookstore : 'Uppers and Downers'

Ar 15 Uppers Complete News:

Complete AR-15 Upper Receivers for sale at

Great prices on complete AR-15 Upper Receiver Assemblies. DPMS, Bushmaster, Surplus Ammo & Arms SA&A, DSA. Complete, Assembled, & Ready to shoot.

Original Source:

Complete Uppers – AR-15/M4 COMPONENTS – Elite Tactical Components

Elite Tactical Components is your online superstore for AR-15 / M4 Accessories, Magazines, Uppers, Barrels, Optics, Red Dot Sights, Scopes, Mounts, Tactical …

Original Source:



Original Source:

Complete AR-15 Upper Receivers for sale at

Great prices on complete AR-15 Upper Receiver Assemblies. DPMS, Bushmaster, Surplus Ammo & Arms SA&A, DSA. Complete, Assembled, & Ready to shoot.

Original Source:

Complete Uppers – AR-15/M4 COMPONENTS – Elite Tactical Components

Elite Tactical Components is your online superstore for AR-15 / M4 Accessories, Magazines, Uppers, Barrels, Optics, Red Dot Sights, Scopes, Mounts, Tactical …

Original Source:

Ar-15 Project: Upper complete

Yeah I know the date stamp is off. Just go with it I'm behind. Hope ya'll enjoy there's more to come.


m asked what parts do I need to buy to assemble an AR 15 at home?

I’m a little confused on what exactly I need. Do I only need the uppers and lowers? Do the lower automatically contain the receiver? Could you give me a list of all the parts I need to buy to have a complete AR 15?
Doesn’t asking the question automatically imply that I don’t know the answer??? So, why rub my face in it? I think I’m quite capable of assessing the info and deciding if I’m capable. Here’s a novel thought, I might be able to take it to someone that can help me out…… But to imply I should just give up because I don’t currently have the required knowledge base is irrational? What a bunch of baffoons!

And got the following answer:

Oh good lord.

Sure sparky, an upper and a lower are just two pieces of machined aluminum, that’s a whole rifle right there…/sarcasm.

Look, in the lower you need the fire control group consisting of a hammer, hammer spring, trigger, trigger spring, disconnector, disconnector spring, and safety, not to mention the pins and detents which hold these pieces in. Then you need something to keep the buffer from intruding into the receiver, so let’s see, a buffer retainer and of course the buffer retainer spring, and then how about those takedown pins? Yeah, those. And springs AND detents for both of them.

How about your bolt stop? How you gonna lock that bolt open, sparky? And the bolt stop not only has a spring, it has a plunger, and it’s held in by a roll pin which is a little bit of a pain to install.

And speaking of pains to install, how many front takedown pin detents have you shot across the room? If you don’t know what I’m talking about, you soon will. And I’m eagerly waiting for you to learn the hard way about the triggerguard — a deceptively simple operation that, if done wrong, will crack or break one of the fragile ears the triggerguard pin anchors through and ruin your receiver.

And that’s just the lower. And that’s before the pistol grip and the buttstock.

Now let’s move to the upper. You might want to consider having a barrel on that upper, along with all the requisite parts that go with the barrel, oh, like a gas tube, gas tube pin, and handguard cap unless you’re planning on installing a free-float handguard — you know how to do that, right?

And at the other end, your barrel nut, your spring weld, your delta ring, and that coolio snap ring that causes you to say words Mom doesn’t want you using in polite company.

And if you start with a stripped upper, you’re going to have a wonderful time just installing that ejection port door with its really irritating spring and the little “e” clip to hold the shaft in place. We call that a “Jesus Clip” because when you try to install it and it screws up and flies across the room, you go “Oh Jesus!”

And heaven forbid you get an upper that doesn’t already have the rear sight installed. Bwahahahaha. Let me go pop some popcorn while you figure THAT one out, sparky.

Look, straight answer: If you have to ask, you’re not up to the task. Your best bet is to find someone like me who’s a hobbyist, then buy a full parts kit from somewhere reputable, and then have the hobbyist coach you on proper assembly. That’s your best bet.

Assembling an AR-15 is not the most difficult task in the world. On a scale of 1 to 10, 1 being easiest, 10 being most difficult, the AR-15 is a 1.

Still, you DO have to know what you’re doing.

Just buying a bunch of parts and “learning as you go” will cause you to ruin things. Go ahead, ask me how I know.

So, good luck with that.

Asa asked Whcih is a cheaper way to own an AR variant rifle?

I was wondering if it would be cheaper to buy an AR-15/M4A1 assembled from a gunshop, or to buy the parts over time and assemble them by hand? If I go with the 2nd option, Recommend a few sites for the parts?

And got the following answer:

It seems like a lot of these questions have been popping up lately with inexperienced people wanting to build an AR.

You will need the following to build a complete AR-15:

Stripped lower
Lower parts kit
Buffer tube
Buffer spring
Castle nut (assuming you are building a carbine)
Gas tube
Stripped upper
Gas block
Bolt carrier group
Charging handle
Delta ring (assuming it isn’t freefloated)

The tools you will need:

Armorer’s wrench
Torque wrench
Roll pin punch set
Vise block for upper
Vise block for lower

This is easily several hundred dollars in tools alone, so you better be willing to build many, many more builds after you purchase these tools to justify the cost. Needless to say, your first build would NOT be a “budget” build. Are you willing to spend that much in parts? Are you willing to spend the time to educate yourself on how to build one and how an AR works before you start this endeavor? If I were you, I would start by buying a cheap AR (look at Spike’s or RRA), learn how it works, and then decide if you really want to build one. Oh, and by “cheap,” I mean $800 before tax.

Dakota asked Can you build an ar-15 with only a complete upper and lower?

Do you need any other parts? Or can you put it together and have functioning ar-15

And got the following answer:

If the upper and lower is fully built all you need to do is connect them with the pins on the lower recivier.

hawkeye897362003 asked What is the difference between an AR-15 and a Carbon 15?

I’m puting together an AR-15. I would like to make it a .22LR cal. I have found some complete upper recievers that will work with an AR-15 mil spec lower reciever, but they are Carbon 15’s. Whats the difference and any ideas where to find more .22LR complete uppers (other than Bushmaster Carbon 15)?

And got the following answer:

The Carbon-15 units from BushMaster are manufactured of a carbon fiber composite material instead of aluminum, and will directly interchange with the same AR-15 component, hence its’ name. I have no personal experience with them, as I prefer a REAL rifle (FN/FAL, H-K G-3) over the “poodle shooter”, but the Carbon-15 parts are touted to be stronger, lighter, and more durable than their aluminum counterparts.
There are several other manufacturers of the AR-15 components you seek, including Alexander Arms, DPMS, and Olympic, as well as BushMaster.
Your best bet for a quick look-see, as well as probably best prices, go to , and just follow their site search software links, as Midway carries all these makers and models.

asked If i bought an ar 15 lower and upper both already complete then attached them would it be ready to fire?

I was thinking you could do this and it would save around 500$ but why so much when there together already?Maybe i’ve just been looking at the exspensive ones.Do i have to get special tools or bring them to a gunsmith to put together?

And got the following answer:

Yup. If both are complete, when assembled you have a working gun. AR’s can vary greatly in price. A lot of it like everything else with guns is paying for a name.

class93409 asked What are the benefits for each in choosing a stripped or full upper receiver for an AR-15?

I recently purchased an AR-15. I am in the military and know my way around guns but am in no way an expert. The AR I have has an integrated carrying handle and I would much rather prefer a picatinny system for mounting optics. What are the pros and cons to using a stripped upper receiver versus a complete full length upper receiver? Just looking to hear some opinions.

And got the following answer:

I agree with risonav. At times, buying a stripped upper will save you money. Although, you will need to spend money in buying the necessary tools to put the whole upper together. Vice block, armorer’s wrench, vice, torque wrench, etc. Plus the tools to check the head-space once the barrel is on. Although, once purchased, these tools will continue to be used as you make assemble many more uppers, so they can be considered a one time expense ๐Ÿ˜‰ The cons are the time expense, tool expense, and having to check head-space on the upper. Assembled uppers already have all of this done, but for about $100 extra, more or less. Note, that money figure is excluding the tool expense, because you might have some of those already. Also, checking head-space is not difficult, just takes a little time. By the way, thank you for your service!!
Amended: Assembling an M4 carbine upper from parts from Bravo Company Manufacturing will only save you a few bucks (maybe around $30). Their complete uppers are top notch (equivalent to Colt and such) and start at around $430 minus handguards and CH, BCG. You’ll save more money if you’re building a more “exotic” upper with a lo-pro gas block and free float rail, since you subtract the initial cost of the delta ring assembly and A2 front sight base.