Free Republic
Browse · Search
News/Activism
Topics · Post Article

To: Eye of Unk

Why go to brass?

AR receivers (uppers and lowers) are typically made of 7075 aluminum. You could make them out of just about any aluminum and they’d work. The 7075 alloy is just stronger than other aluminum alloys.

The melting point of aluminum alloys that would be useful here (6061 or 7075) are in the range of 900 to 1100+ degrees F. Brass alloys melt up in the high 1600’s to low 1800’s.

What many AR fanboys don’t realize is that, to those of us who work on old-fashioned guns made of steel and wood, AR’s are already effectively made from pot metal and plastic.

AR


24 posted on 12/25/2012 9:23:29 PM PST by NVDave
[ Post Reply | Private Reply | To 20 | View Replies ]


To: NVDave

The important parts are made of steel.


25 posted on 12/25/2012 9:26:19 PM PST by Trailerpark Badass (So?)
[ Post Reply | Private Reply | To 24 | View Replies ]

To: NVDave

For a first time process you could cast the lower out of melted aluminum beer or soda cans. But its not a high strength aluminum allow. Obviously almost any metal would work that can be melted. And anyone can argue themselves blue which is better. But if it fired at least a mag full its a success. Even if its heavy, chunky and full of voids if it houses the important parts and allows them to work then its a success.

The cat is out of the bag, its pregnant and its going to propagate explosively. I visit firearm forums a lot and its amusing how many internet ego experts are popping up claiming it won’t work, it will be ugly, they who make their own are not of the elite bling crowd, yadda yadda yadda.

I see history here when during the Revolutionary war people were making their own rifles, its time we do it again.


36 posted on 12/25/2012 10:01:21 PM PST by Eye of Unk (A Civil Cold War in America is here, its already been declared.)
[ Post Reply | Private Reply | To 24 | View Replies ]

To: NVDave
Yeah but they are certainly more fun to me than any of my conventional weapons. The fact that the mere sight of them drives liberals (who now call themselves “progressives” as camouflage)... bat**** insane is just icing on the cake.

LLS

51 posted on 12/26/2012 3:08:13 AM PST by LibLieSlayer (A child is born in Bethlehem KING of KINGS)
[ Post Reply | Private Reply | To 24 | View Replies ]

Free Republic
Browse · Search
News/Activism
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson