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Originally Posted by johnn
If you want a reliable "SHTF" AR, I would suggest buying one.

ARs are fun to build, however there are plenty of frankenguns that get built, especially first timers.

Reliability is #1, IMO.
Especially when PSA will put their Andro Corp 16" mid length gas rifle on sale for $399 again reasonably soon. Granted, I swapped the trigger and charging handle (gas buster for shooting with a can) but it was fine"as is"

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Originally Posted by johnn
If you want a reliable "SHTF" AR, I would suggest buying one.

ARs are fun to build, however there are plenty of frankenguns that get built, especially first timers.

Reliability is #1, IMO.

So far, (knock on wood!) I haven't built an AR that wasn't reliable. I don't use any magic powders, glues, tools or sealants. Just assemble and shoot.
At this point, I've only had two that failed a successful test fire. Both were errors I made in assembly. Reassembly corrected the problem.

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Originally Posted by MartinStrummer
Originally Posted by johnn
If you want a reliable "SHTF" AR, I would suggest buying one.

ARs are fun to build, however there are plenty of frankenguns that get built, especially first timers.

Reliability is #1, IMO.

So far, (knock on wood!) I haven't built an AR that wasn't reliable. I don't use any magic powders, glues, tools or sealants. Just assemble and shoot.
At this point, I've only had two that failed a successful test fire. Both were errors I made in assembly. Reassembly corrected the problem.

If Burns can do it.....


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OP is in California, SAHTF (schit already……)
He may already have the poly frame not sure if lowers are still available in CA
Not that I know a whole lot about AR’s but a poly AR seems better than no AR when shtf.

Last edited by 338reddog; 08/07/23.
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Originally Posted by goalie
Originally Posted by johnn
If you want a reliable "SHTF" AR, I would suggest buying one.

ARs are fun to build, however there are plenty of frankenguns that get built, especially first timers.

Reliability is #1, IMO.
Especially when PSA will put their Andro Corp 16" mid length gas rifle on sale for $399 again reasonably soon. Granted, I swapped the trigger and charging handle (gas buster for shooting with a can) but it was fine"as is"

Thats hard to beat, I would be hard pressed to build one for less.


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Originally Posted by goalie
Originally Posted by johnn
If you want a reliable "SHTF" AR, I would suggest buying one.

ARs are fun to build, however there are plenty of frankenguns that get built, especially first timers.

Reliability is #1, IMO.
Especially when PSA will put their Andro Corp 16" mid length gas rifle on sale for $399 again reasonably soon. Granted, I swapped the trigger and charging handle (gas buster for shooting with a can) but it was fine"as is"

PSA has a 20" stainless 1-7" ROT barreled upper that is ready to drop in on sale today for $349.99.

SKU 5165500368

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Poly lowers tend to break at the buffer tube threads

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Originally Posted by hardway
I know next to nothing about AR's.... my question is....can a "quality" rifle be built on a polymer lower? It would be just a standard 5.56 SHTF gun.... nothing fancy, iron sights..... 16" barrel.... dependability would be the main objective with weight second. Thx.

No.
The AR lower was designed to be made with aluminum alloy, not polymer.
Also when you can buy a quality alloy AR lower for $39 there is no reason to go with polymer.
https://palmettostatearmory.com/psa-ar-15-m4-carbine-stripped-lower-receiver.html

I think the above sale price is good until 12:00 midnight ET 8/7


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Originally Posted by hardway
I know next to nothing about AR's.... my question is....can a "quality" rifle be built on a polymer lower? It would be just a standard 5.56 SHTF gun.... nothing fancy, iron sights..... 16" barrel.... dependability would be the main objective with weight second. Thx.




If it's a SHTF rifle, do you really want a plastic/polymer lower?


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I wouldn't chance it, unless the design has been reinforced they tend to be weak around the buffer area. I've got one I'm going to be using for a lightweight but that's only because I got it for free with a few other parts

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Originally Posted by 338reddog
OP is in California, SAHTF (schit already……)
Not that I know a whole lot about AR’s but a poly AR seems better than no AR when shtf.

If the ghoulie attacking you is using their hands, a rock or sharp stick is helpful! LOL!

BTW! LA city workers are on a 24 hour "walk out". Notably sanitation workers, zoo workers, city pool lifeguards, etc, etc.
Travel advisory is to give yourself another hour at LAX to negotiate the picket lines!

THOSE HELPFUL UNION GUYS (T.H.U.G.!) at your service!

Last edited by MartinStrummer; 08/08/23.
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Not all polymer is equal.




Not cheap either


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Originally Posted by 260Remguy
In a SHTF scenario, I would prefer the peace of mind of an alloy receiver. If price isn't an issue, I'd buy an alloy receiver. If price is an issue, I'd wait long enough to save enough money to afford to buy an alloy receiver.

I put together a dozen or so ARs on Plum Crazy lowers back in 2010/11. AFAIK they are still working, but most went to friends who are not high volume demanding users. I kept one that has been in both M4 and M16A1 formats, have fired around 5K rounds through it, and haven't had any issues with it. That said, the AR that I keep in my vehicle is a S&W M&P.
I built a bunch years ago also. Friends are still shooting them and have had no problems. I still have on plumcrazy myself that works great. I could see problem with wearing the holes egg shaped with a lot of rapid fire.

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Want lite weight go carbon fiber, not cheap but very lite weight

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Originally Posted by TWR
Some of y’all’s recommendations for SHTF would be better suited for a fart on a windy day.

This is correct ⬆️
A plastic frame little shipbox 5.56 when the shtf?
Better set your sights a little higher

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For what it’s worth, my 11 yr old daughter, last year when she was 10, built a
Anderson lower
Larue guts
Larue trigger
Sanders armory $200 upper
Magpul grip and stock
I forget which buffer, but it sure shoots smooth.
She swiped a vari x3 1.5-5 from me that I bought for $100 and sent back to leupold for a rebuild.
Leupold cantilevered mount when midway had em on sale last year
It might be a $600 project

It shoots surprisingly well for the $$$

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Originally Posted by MRKbass2
Originally Posted by TWR
Some of y’all’s recommendations for SHTF would be better suited for a fart on a windy day.

This is correct ⬆️
A plastic frame little shipbox 5.56 when the shtf?
Better set your sights a little higher

I take it........You dont own a Glock....


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SHTF - I'm grabbing everything I can carry - regardless of construction. No gun left behind....

I have a Grock - but I also have 1911's. I don't anticipate ever having a polymer AR, mostly because I don't have a personal need for the "advantage" of its lightweight over metal.


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Good grief folks, if things go south in a bad way, do you really want to grab the cheapest thing you can find? Is this how you have planned to save the world?

I have Glocks but I don’t butt stroke anyone with them.

I really hope y’all will buy better stuff, cause when I conquer the world, I don’t want a bunch of crappy guns.

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There is absolutely nothing wrong with a quality poly lower, but they are not all equal.

With that said, good polys are not cheap. Unless the goal is lightweight, there is no reason to use one.
My point is compared to alloy you are not giving up durability or reliability.


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