One Lower W/ Multiple Uppers

[Hunterdad]

Just wonder who out there runs 1 lower with multiple uppers? I have an LRB lower that I have an RRA Elite Operator upper on and plan on picking up an RRA 20" Predator upper for some long range shooting and want to use the same lower.

Anyone ever run into problems doing this?

Thanks
Adam

 

[desidog]

2 lowers / 5 uppers here.

No problems... except choosing which configuration to use!

/It's a good problem to have.

 

[oldpapps]

It's a great idea. It just doesn't work with me. I'm too impatient to pull one upper and stick another on.

I have done multi uppers for the same lower. I mated a BCG to each barrel as a general rule for me. It just makes scene to me.

That is one of the great things about 'modular' weapon systems.

 

[Hunterdad]

Thanks for the replies guys. I just don't see me using the 20" upper all that much, so that's why I'm not really considering its own lower. I'm sure down the road as the funds allow, I'll pit together a nice lower with a nice trigger.

 

[oldpapps]

Know what you mean, I think.
I have a RR 20inch Varmint A4, very, very nose heavy. Makes one hole at a hundred yards and lit' beasts don't last long. But I'm not going to tote it any place I don't have to. That why they make 16 inchers.

 

[henschman]

Anyone ever run into problems doing this?

The only problem you will run into is the temptation to put together a lower for your extra uppers, so you can show off photos of your badass rifle collection!

 

[TonyAngel]

More than one upper for a lower is pretty common. I generally don't do it because I usually don't have two uppers built for the same purpose. The lower on my compact build is going to be set up differently from the lower on my precision upper. Stocks, triggers and pistol grips are usually different.

It all depends on what you can live with. I would't sweat it. Being able to use one lower for multiple uppers at the least lets you shoot all of your uppers until you can get around to building more lowers.

 

[Z-Michigan]

Once in a while you will an upper and lower that just won't fit, due to the parts being at opposite ends of the tolerance spectrum. This is rare, but it can happen, and not always with cheap stuff (I've experienced it with a DD upper not fitting a Noveske lower). But, 95% of the time you are good to go.

 

[Sky]

Thanks for the replies guys. I just don't see me using the 20" upper all that much, so that's why I'm not really considering its own lower. I'm sure down the road as the funds allow, I'll pit together a nice lower with a nice trigger.

In a fantasy Bug out dream I have thought about a back pack with two extra uppers in different calibers.

I have a RR 20inch Varmint A4, very, very nose heavy. Makes one hole at a hundred yards and lit' beasts don't last long. But I'm not going to tote it any place I don't have to. That why they make 16 inchers.

Yep the 20 and 24 are heavy but great bi-pod or bench shooters with proper optics IMO

I started out thinking one lower two uppers and then some where sometime I just mated uppers with lowers because I could get better balance and maybe triggers with certain firearms if I did.

 

[X-Rap]

I can't do it, I also tried with Contenders. It just ends up being something incomplete so I finsh it.

 

[tulsamal]

Physically, it works. But put me in the camp of, "never lasts for long." I will buy or build a new upper. Start switching it back and forth on a lower. But then the upper that isn't mounted doesn't fit in the safe. So it gets put "somewhere else." Then when I want it, I can't remember where it is. Or a situation comes about where one particular AR configuration would be perfect. And it is always the upper that isn't currently "mounted." So I'm crashing all over the house opening safes and closets and yelling about how ridiculous this is.

It just sort of feels unfinished. Like a half painted room. And sooner or later there will be a good deal on stripped lowers. And I will pick up two or three of them. And hey, there's a good deal on lower receiver parts kits. I could use those just for spare parts. Then it finally occurs to me that I could spend about $50 more and actually build a complete new lower and that poor orphaned upper could have its own dedicated lower.

Usually about a month later I buy or build another upper. And the cycle starts again....

AR's..... They are worse than shoes for women!

Gregg

 

[kcshooter]

It just ends up being something incomplete so I finsh it.

Yep. Me too.

 

[A square 10]

i have a 20" dedicated 22LR upper that changes places with my 20" 223 upper from time to time

 

[cfullgraf]

I can't do it, I also tried with Contenders. It just ends up being something incomplete so I finsh it.

Yes, I have several barrels for one Contender frame. I virtually never use the un-mounted barrels.

So, when I got into ARs, one upper, one lower.

 

[Quentin]

You can use mulitple uppers on a lower but over time with the deals you stumble across why not build another lower? For example over the last year I've seen $80 stripped lowers, $40 PSA LPKs and $40 PSA buffer tube kits. Also I've seen used lower parts even cheaper. Anyway if you're patient a complete lower can be done quite cheaply and now you have another complete firearm. The recent lower I finished, I had the stripped receiver laying around for about 9 months.