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Thread: AR15 Lower in Titanium
06-17-2009, 11:50 PM #1
AR15 Lower in Titanium
Why have I never seen one of these?
06-17-2009, 11:57 PM #2
06-18-2009, 12:00 AM #3
My best guesses:
-Cost (stupidly expensive)
-Answer to a question nobody asked.
-Doesn't do anything a forged or billet lower won't do for less money.
06-18-2009, 12:13 AM #4
Way too expensive. The shop I'm employed at does work with titanium. I had to price out some fasteners. We're talking $15 to $20 for ONE #6-32 x 1/2" SHCS (socket head cap screw). Just imagine how much an AR-15 lower would run.
06-18-2009, 12:36 AM #5
- Join Date
- Dec 2006
They exist but only in a forging from what I remember.
Or maybe it was from a site that sold 80% receivers.
From what I remember it was Olympic arms that had them available.
Yep they sold 80% receivers alright.
Last edited by SemiAutoSam; 06-18-2009 at 12:38 AM.
06-18-2009, 12:53 AM #6
- Join Date
- Feb 2007
- Live Free or Die
The lower doesn't really take any wear anyway. If anything the bolt and carrier and the surfaces it rides on in the upper are the high-wear surfaces.
06-18-2009, 01:04 AM #7
06-18-2009, 01:28 AM #8
- Join Date
- Dec 2006
From what I see here the magnesium is lighter than Titanium but Titanium is much stronger.
I bet a company that builds lowers could make one from a block of either material but tooling wear would be worse with Titanium and that = more $ to the end user.
Metal or alloy kg/cu.m
06-18-2009, 01:29 AM #9
The lower receiver does not bear any real load during use.Disclaimer: I am not a lawyer and thus any interpretation or statements about the law that I might make should be taken with a grain of salt and mixed with your own legal research as well as advice from actual legal counsel. I cannot be held responsible if you find yourself somebody's "friend" in federal, state, or local prison should you act on my opinions on the law. My interpretations of the law will generally be on the conservative side.
06-18-2009, 03:33 AM #10
Everybody gets all hot and bothered over titanium. The trendiness is tiring.
Fact - Titanium weighs 60% more than Aluminum for a given volume.
That means that if you use an existing design meant for Aluminum and make it out of titanium it will weigh 60% more than the aluminum part.
Think of it this way:
Titanium is a light version of Steel
Magnesium is a light version of Aluminum
Titanium is sometimes substituted for steel in high performance applications. Valves and valve springs come to mind.
Magnesium is occasionally subbed for Aluminum. They have similar fatigue properties if memory serves me right.
So. . . if you wanted to make a lightweight AR, it would be interesting. You cold build the receivers out of magnesium. You could certainly make the bolt out of titanium. I'm not familiar of anyone using titanium for barrels. But it might be possible.
Front sight base, buffer tube could be magnesium as could some fire control parts, with the highly stressed trigger, sear, and disconnect made out of Titanium.
Finally, the buffer and spring could be made from Titanium. With the right amount of gas and the proper weight spring, the gun would run fine with the lighter reciprocating mass. (Combined mass of the BCG and the buffer)
Last edited by dcmdon; 06-18-2009 at 03:39 AM.