Cast AR-15 Reciever performance.

[DemocracyEnaction]

Thinking of picking up one of these

https://www.ar-parts.net/product/80-lower-receiver-od-green/

Has anyone used one of these?
How do they stand up to heat?
Are there any reports of cracks?

I'm looking for real info from calgunners not thread crapping.
Thanks.

[speeedracerr]

Interested in knowing about the results as well...

[ptoguy2002]

I did one cast one that I got from ar15plus several, several years ago. (not the one you linked to).
It sucked.
The problem was that you relied on the top of the receiver, and the back being straight and square to align with the drill jig.
Mine wasn't.
Can't trust a casting to be straight and square, without machining after the fact.

[DemocracyEnaction]

Thanks ptoguy never thought of that.

[h0use]

I have a few of them I did out of there 80% and they work just fine!
There is really no stress on a lower. I have one I have fired serval thousand rounds with out any problems.

[h0use]

Cast AR-15 Reciever performance.

Here is one I duracoated pink for the misses

No cracks. Very strong. Investment casting is very expensive. I bet the molds they used most likely cost over 100grand. They use alloy380 I believe witch actually has a stronger tensile strength than 6061 witch normal lowers are.

They don't recommended anodizing cast but it can be done.

[bohoki]

vision armory stuff is decent bought one on the gunbrokey for $35 hogged it out rattlecanned it all mags fit fine the buffer tube is correctly tapped grip hole tapped correctly the only thing that is wrong is the safety detent hole is not double drilled its just drilled the full size so my safety kind of wiggles

[DemocracyEnaction]

Roger that keep the info coming in I appreciate it. Thanks guys.

[h0use]

For the price you can't really beat them! Much better than a polymer lower! I had a few polymer lowers and one of my dogs used it as a chew toy lol...

[DemocracyEnaction]

What about heat? how much heat could they stand?

[h0use]

Cast AR-15 Reciever performance.

Just wondering why are you worried about heat? There is no heat being transferred to a lower.

If your worried about leaving them outside and melting? That won't happened either.

[bohoki]

What about heat? how much heat could they stand?

the standard melting point of aluminum

[DemocracyEnaction]

Roger.

[VytamenC Tactical]

had a friend buy one there was a big inclusion in the casting in the rear looked like crap.

[kcstott]

As long as it's a quality casting no real issue. I was sold some casting that aren't fit for BB's but I keep them around for pistol uppers,.