What are your opinions on non matching ars. I have a s&w mp 15 lower with a bcm bfh upper and wondering if this is considered tier 1 or is discuallified because of the s&w lower. Many people say that lowers are lowers. I was wondering does it all boil down to the upper as far as tier 1 or is the lower just as important to quality.
Thanks slab.
Just being really curious here.
Why does it matter if it’s “tier one.” It can be Opus One so long as it does the job. The opinion of many seasoned people here has been reiterated time and time again. A Frankengun is never going to be as good as a complete firearm from a manufacturer.
The lower is a good piece, the upper is a really good piece. Slap them together, shoot them, and enjoy. At this point, you have a good base and the quality of the parts that you put into it are going to determine if you have a great and reliable rifle. What BCG are you using? What trigger? ETC…
Not trying to be rude. Just honest about the need for others approval. I think that at this point if you have two pieces that you know you’re going to use together the bigger mission is tracking down a good trigger and BCG.
A franken AR made with good components that runs 100 percent is is a good tool.
Lower resale value and less forum bling are the downsides.
If your tool works and fulfills its purpose, who cares?
This is not facebook, or some rifle tier circle jerk. Function over form.
Mine is a FrankenGun that runs and runs well on a wide variety of ammo. I built it from the best quality components in my price range. I’m not concerned with resale value.
I’m not looking for a circle jerk just wanting to figure out how much the upper plays into the quality of the rifle. Seems like most ars have multitude of upper configurations but the lower is pretty constant. Sans trigger.
There is no tier, if there was, yours wouldn’t be in the top one. The tier system is a generic slang term. It isn’t a question of a lower being a lower, it is a matter of what the quality level is of the springs, buffer, and other components are which are involved. The lower is simply a shell, but the company which built it is an indicator of the components used.
In general, the upper half of the weapon is much more important than the lower, but that doesn’t negate the bottom half having importance as well.
You still have a good weapon from the sounds of it.
What are you talking about, when did a BCM BCG suddenly need to be replaced because it isn’t good enough? Comments like that get remembered as showing your level of knowledge.
Stick I think you misread. He didnt say a BCM BCG wasn’t good enough. OP never mentioned a BCM BCG, he was just saying find a good trigger and BCG.
I have a frankingun and I love it just as much as my colt. As long as you have quality parts from quality companies I wouldn’t worry about it. If it works and you like it, that’s all that matters.
Thanks stick. That answered the question of my post.
Bcm bcg installed. Maybe stick knew?
Tiers are like stages in car modding, as I have said before. It is meaningless internet/goodbro crap.
Just start off buying quality parts after doing your research, consult people with experience and actual knowledge in the field, and do it right the first time…although with ARs, if you mess up you are risking a lot less money than with performance car parts (like blowing your engine/turbo/spun rod etc).
Maybe he did know. That was my entire point. Once you have an upper and a lower, you find good quality parts to go inside of them. No way for me to know that the OP had a BCM BCG installed and therefore recommending finding a great one along with a great trigger was the next logical step after setting up an upper and a lower receiver.
Glad that Stick was fast to jump on me and imply that I was ignorant. 
Honest mistake I guess, but damn, right to the personal attack.
Sorry Stick, I just can’t read the OP’s mind. I’m not THAT good yet.
I don’t think Stick misread anything. The OP said he was using a BCM upper. Guess what BCG people are going to think is in it?
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Right now all of their (BCM) uppers are selling without the BCG. It’s not that far off of an assumption that the gun may not be a complete BCG upper.
That’s just as of recently. The OP didn’t state when he put this together. Likewise, he didn’t give any other details other than the brand of upper & lower. One is gonna assume, given the details, that both are complete.
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S&W lowers are actually pretty darned nice. I’d throw a badass BCM upper on it and be done, brother. While you’re at it, drop all this “tier 1” ARFCOM talk and just buy quality weapons from the start.
Actually as of recent, BCM is offering most of their uppers with the BCG and CH as options. You can buy just a plain upper sans BCG and CH, but with BCGs being in such short supply, there’s no point NOT to grab it even if for a spare.
They weren’t yesterday… I know, I was on looking for a 14.5 M4 profile upper set. Had one available but it would not let you select a BCG for the upper. Managed to get a Fail Zero which will do me just fine.
Everything is out of stock right now, so you can’t get anything, upper or BCG
Either way. Couldn’t read the OPs mind.
OP, I have the same rifle, S&W lower and BCM upper.
It has functioned fine. Though I do have a new trigger, buffer spring, and buffer in the lower.