Custom Build - Similar to BCM EAG Carbine

AR/M4 Custom Build Forum
1

I have done a lot of research, but obviously no where near the knowledge some other people on here have.

While I really like the BCM EAG Tactical Carbine, I do not like all aspects of this rifle and from hearing what other people have said about it, I would like to create something similar.

First question, before I get into this. Should I just go the SBR route now and custom build a 11.5 or just stick with the 14.5 with FH then get another upper later? I do like the compactness of the 11.5.

Price is not a factor, but would like to keep it under 2200.00

I will try to keep this short, Need some help filling the blanks, please try and refrain from offering other brand names (DD, Noveske, etc)
BCM Upper - BCM Upper

Length: 14.5
Handguards: MAGPUL MOE Carbine (FDE)
Bolt Carrier Group: ??
Charging Handle: ??
Flash Suppressor: ??

BCM Lower - BCM Lower

Bullet Button (Magazine Locking Device): None
Grip: MAGPUL MOE + FDE
Stock: I am leaning towards the MAGPUL UBR
Receiver Plate: ??
Trigger Options: ??

Reason for not going with BCM’s Carbine package? The pistol grip, the sling, the light, and the stock (well its not a bad stock, but I really like the UBR).

My Trade is flying helicopter so I appreciate all the help and advice.

Nate

2

Do you currently own any ARs? How do you know you don’t like certain things?

You could probably just replace the things you don’t like and sell the ones you don’t like. The EAG gun also comes with a $200 training certificate for a Pat Rogers’ Class, which all in all makes it a pretty good deal.

3

No,

I currently don’t own any ARs, but i do take experts’ recommendations seriously.

I’m just looking for some help filling the blanks.

Thanks,
Nate

4

Length: 14.5
Handguards: MAGPUL MOE Carbine (FDE)
Bolt Carrier Group: ?? BCM Auto
Charging Handle: ?? Gunfighter Mod3
Flash Suppressor: ?? Pinned AAC Blackout

BCM Lower -

Grip: MAGPUL MOE + FDE
Stock: I am leaning towards the MAGPUL UBR
Receiver Plate: ??
Trigger Options: ALG ACT

SBR are good to have but for better all around it is good to have a 16" OAL Carbine that you can take anywhere and everywhere.

5

BCM lowers do not come stripped.
The receiver plate refers to the endplate that you stake into the castle nut when installing the receiver extension, (buffer tube).
If installing a Magpul UBR stock this does not apply.
It’s a good idea to know what you are talking about before dishing out advice to new members/new AR owners.

OP, the EAG carbine is a BCM 14.5" midlength hammer forged upper. It has an A2X flash hider pinned and welded to bring it out to 16" OAL, making it non NFA.
It also includes a Larue 9.0 freefloated handguard and a Troy rear BUIS.
http://www.bravocompanyusa.com/BCM-EAG-14-5-BFH-Mid-Length-Upper-Receiver-LaRue-p/bcm-uh-eag1.htm

BCM and EAG also paired up for the EAG Hotel Sierra carbine.
As far as I know it has not been released yet.
It is also a midlength gas system, it sports Magpul MOE handguards and a pinned and welded muzzle device, again to bring it out to 16" OAL.

6

I guess my point is, if you take experts’ recommendations seriously, why aren’t you taking Pat Rogers’ recommendations seriously? Because you don’t like the aesthetics of the grip/stock/flashlight? It should be form over function, not that a UBR is bad, just that it weighs much more, etc. What is your plan for this carbine, self defense? shits and giggles?

Again, if price is no object, buy the EAG carbine, buy the stuff you want for it, and sell the stuff you take off of it.

Your selections include a carbine gassed barrel, instead of a midlength like the EAG carbine. Even if you were replicating the EAG HS carbine, which is closer to what your choices indicate, they used a lightweight midlength barrel.

You’d probably be best served by getting the EAG carbine and going to an EAG class with the certificate and THEN changing the things you don’t like.

7

Listen to polymorpheous he knows his stuff!

8

If the OP is looking to use an UBR, then he would NOT use a standard receiver end plate OR a buffer tube.
You also stated that he would need a LPK to install in the BCM lower he is looking to purchase.
BCM lowers are NOT available as stripped lowers.

Now tell me, just how do you know what you are talking about?

As for his question, if the OP read my post, he would have found answers to his questions regarding, at the very least, the UBR set up.

9

At worst, he “attacked” the errors in your response, and took the time to point them out WHY they were errors, thereby making it more properly termed “correction.”

Also, members are encouraged to conduct searches. It’s mentioned in M4C policy as a heavily preferred practice. If members encouraging other members to conduct searches so that they can learn things for themselves from within the available information (or at least refine and narrow their questions) irritates you…

  1. …well, that’s too freaking bad, and it’s not your call to upbraid folks for doing what they’re supposed to do. It’s a big internet, maybe a venue that’s cool with spoon-feeding folks is more your speed.

  2. Since you brought it up in an instance where it wasn’t done, I’m interpreting that as a partial smokescreen on your part, attempting to obscure focus on the errors you committed and he corrected. Nice try, and it doesn’t change the fact that you were passing some bad gouge as a result of you skimming or completely misreading the original post, and don’t want to admit it like an adult.

So, pump your brakes and try to focus on the message, instead of the medium…and do so while not posting in this thread until you learn to take your objections to proper correction to PMs.

10

Hey all,

Thanks for all the help you have povided. I am still shopping for the best setup for myself. As mentioned i really like BCM EAG, but wanted to change some of the aesthetics of it (UBR, Grip, Fore-Ends).

The problem is I am not that familiar yet with all the requirements to build a working rifle, but I am learning and i have no problem building one.

If anyone has other options or opinions on the questioned marked items in my first post then please reply.

The main purpose of this rifle is HD, SHTF, and occasional range work and training courses.

Thanks
Nate

11

If youre planning on taking this weapon in and out of the cockpit with you on a daily basis, you will appreciate even the marginally shorter Over All Length of a 14.5" barrel and definitely the significantly shorter OAL of an 11.5" gun. Something to consider.

Magpul’s Arial Platform Operations instructional video will give you a good primer for the safe handling of weapons and related support equipment in and around rotary-wing aircraft, though it will probably just reiterate what you already know if youre a pilot.

Previous suggestions and many others for particular components will serve you just fine. Part of this hobby/lifestyle/profession is buying and using products to determine which YOU prefer. If this is your first AR, you may not even notice the difference between the mentioned ALG trigger and say a Wilson or Timney product. Similarly, no significant difference will be noticed between say a DD and a Troy receiver endplate sling adapter or an AAC FH versus a SureFire product. In short, so long as you buy from a reputable manufacturer, youre going to be fine.

12

My $.25 follows…

OP, have you ever handled a rifle with a UBR on it? I’ve owned rifles with the UBR, and unless it’s 16" or better, it’s just too damn heavy. On a shorty it’s ridiculously ass heavy. On a 14.5, with MOE handguards, it’s going to be too heavy, but that’s just my opinion.

I’ll echo what others have said, if you like the EAG carbine, then buy it. Pat Rogers knows more about fighting with a gun than almost anyone else alive, and he adheres strictly to the “form follows function” line of thinking.

The parts on the BCM EAG are no nonsense, utilitarian, and proven. LaRue rails, well, they don’t really need introduction or justification. The TD BG-16 is one of the best grips made, and personally I like it a lot better than the rest. The CTR is light, quick, and strong. If you want a higher cheek weld, then get a riser for it, but that won’t be necessary if you shoot it like a carbine. The G2X is a 200 lumen piece of I-dare-you-to-break-it, it isn’t ninja-riffic like the 620V, but who gives a shit? It works, and you can rely on it.

The sling is where I’ll depart. I’m not much of a fan of 2 points that won’t go to single point, but the sling is such a cheap piece of gear that it’s really a non-issue here.

If you are completely dead set against getting the EAG carbine, and want to build one, then you’re probably going to spend a LOT of money finding out that certain combinations just don’t work. I did, and countless others on this board have. Nobody is trying to tell you, “hey guy, you’re an idiot, do it my way,” because that’s just fucking stupid. What we are doing is offering some advice based on our experiences of dumping a LOT of money (read that as tens of thousands) into shit that doesn’t work. A lot of us have military and LE backgrounds, and are really good at breaking things and finding out what does and doesn’t work.

You’re definitely on the right track with BCM, but if you go with the UBR, then you’re going to need a rail that will come close to balancing it out. If you pick the AAC Blackout, then bear in mind that you will ONLY be able to use AAC cans on that gun. If you’re fine with that, then bueno and power to you.

Personally, I’m with the other guys that have said buy the EAG, and find what you don’t like on it through some training and use, then re-evaluate in a few thousand rounds, you’ll have a much more specific idea of what you want.

All of the above is my personal opinion, acquired through time, effort, and too much money, take what you can use and ignore the rest. Good luck with your purchase brother.