•The Under $500 Complete AR15 5.56/.223•

fivepointstar · Mar 1, 2012

kohburn said:
a LOT more have been sold than have failed. the failure of some of them was questionable, but they have a lifetime warranty so if it brakes they replace it.

i've got a plumb crazy and have had no problems. thinking about getting another one and SBRing it

is Plumb Crazy use a polymer hammer and other internals?

bigred · Mar 1, 2012

fivepointstar said:
is Plumb Crazy use a polymer hammer and other internals?

Yes and these do also but unlike the Plum Crazy, these will take any mil spec LPK.

kohburn · Mar 1, 2012

yep - all polymer except springs and bolt hold open, even the magazine release.

it's not as heavy duty as all metal but its also as light as you can get a lower.

just don't jam it into an air duct and hang down an elevator shaft from it using your belt. it may not hold up to that

kohburn · Mar 1, 2012

my only complaint really is that the trigger guard is fixed and not replaceable.

Biggfoot44 · Mar 2, 2012

I am having visions of a sub 5lb carbine.

km04 · Mar 2, 2012

I picked up one if the lowers, looking for an upper now. the one at Midway is on back order and Del-Ton told me 4-6 weeks. My search continues...

Markp · Mar 2, 2012

kohburn said:
my only complaint really is that the trigger guard is fixed and not replaceable.

Sure it's replaceable... just add tools. I bet I could replace it using a mill and a few bits.

erwos · Mar 2, 2012

bean93x said:
i'd rather spend $10 less for a aluminum receiver.

A completed aluminum lower with a collapsible stock for $90? Really.

Personally, I feel like an ultra-cheap build like this might be better suited for .22LR. So, instead of getting a fake AR-15 in .22LR, why not get the real deal with sights and magazines from our IP JBO:
LW-15 lower: $100
Chiappa M4-22LR upper: $300
MBUS Rear: $55

Or, if you could push just a bit more, there's the better CMMG upper for $350...

kmb · Mar 2, 2012

I get AR afficianado's thumbing their noses at the idea of a polymer lower. It makes sense. I mean, sh!t, I'd never sell them en masse to the Army, lest they get kicked, dropped, slammed in basic training. Keep an open mind, it may prove to be the next best thing.

In the late 80's and 90's carbon fiber was introduced into professional cycling. Bike frames were steel, then aluminum or titanium and eventually CF. Due to technological advances, CF is available for the masses and makes up a majority of new road bike sales. Guys my size (215) aren't supposed to be riding it. But we do and I know of and have seen guys pushing the 280+ mark on carbon fiber bikes and they hold up. When CF fails, it does so catastrophically. Like when the girl from New Market and her bf from Poolesville car-doored me last Memorial Day. But I digress, I'm ok.

Would I want a thinner walled carbon bike under me? No. But I'll take the standard 1000g frame and build a 15lb bike. As compared to a 22lb steel bike or 19ish titanium bike. There may be some future release of these lowers where polymer keeps the weight down, but proves to be as resilent as metal ones. Maybe with something like carbon fiber threads in the mold. It could happen. And just like these polymer lowers have failed, so have metal ones. No production line in the world is perfect. But I like the thought to a nice custom titanium lower......

PM me if there is group buy interest. It would be cool to GB and then meet at a range to compare notes on firing, composition, testing different ammo, durability over 1 mo, 3mo, 6 mo and longer intervals.

erwos · Mar 2, 2012

Well, we're already seeing the polymer revolution happening to rifles. A lot of new designs are going that route, especially with the lowers, to save weight. The real problem is not so much "polymers", but that the AR-15 was not designed with them in mind. No one's published any formal analysis to figure out where exactly you can properly use plastic or not. That's not to say that a polymer AR-15 is doomed to failure, but it does make it a somewhat tougher sell to the "all my guns must be able to survive four tours of duty in a tropical third world hellhole with no failures, even though they're never going outside the range" crowd.

I've been interested in polymer lowers for a while, but every use I come up with seems to have been better fulfilled by Kel-Tec.

Indiana Jones · Mar 2, 2012

Polymer rifle = airsoft

Russ D · Mar 2, 2012

Would anyone be interested in plastic Ars if they weren't cheaper? CF bikes are more expensive because they are stiffer and lighter and both make a better bike. Ask yourself if you would pay more for a plastic AR.

Indiana Jones · Mar 2, 2012

Markp · Mar 2, 2012

How about an AK then? :lol2:

zombiehunter · Mar 2, 2012

MauiWowie said:
If you buy 20+ it goes down to $85 even I'd be willing to give that a go....

I'm in the same boat as a Poly lower... not to sure yet

Set up the GB, I'm in for 3 :innocent0

kcd · Mar 2, 2012

zombiehunter said:
Set up the GB, I'm in for 3

How would that go with the 30 day wait rule for regulated stuff -- stretch it out over 3 months? I would be interested in one or more depending ....

r3t1awr3yd · Mar 2, 2012

kcd said:
How would that go with the 30 day wait rule for regulated stuff -- stretch it out over 3 months? I would be interested in one or more depending ....

Either you're a collector and that limit doesn't apply or you can buy two, fill out an extra form and wait 60 days. I don't think there are any options beyond 60 days...

kcd · Mar 2, 2012

Russ D said:
Would anyone be interested in plastic Ars if they weren't cheaper? CF bikes are more expensive because they are stiffer and lighter and both make a better bike. Ask yourself if you would pay more for a plastic AR.

What they need to do is give it a fancy name and charge more, then there may be more interest

If it's lighter and stronger, it's better right? But I think there are people here who don't believe it's stronger, contrary to what the manufacturer claims.

erwos · Mar 2, 2012

kcd said:
What they need to do is give it a fancy name and charge more, then there may be more interest If it's lighter and stronger, it's better right? But I think there are people here who don't believe it's stronger, contrary to what the manufacturer claims.

To be fair, we're also talking about a $100 complete lower. I just checked PSA, and their complete lower is $240. $140 can buy a LOT of quality and better materials.

Put it this way: if Magpul released a complete polymer lower with MOE equipment on it at the $250 price point, they'd sell a zillion of them.

jawn · Mar 2, 2012

Russ D said:
Would anyone be interested in plastic Ars if they weren't cheaper? CF bikes are more expensive because they are stiffer and lighter and both make a better bike. Ask yourself if you would pay more for a plastic AR.

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