aluminum alloy frames and durability

[wolverine_173]

I know the sigs are made of aluminum alloy. Are most other frames that are metal made of the aluminum alloy such as the Cz's, smith and wessons, 1911's?

How many rounds will a sig frame last if the recoil spring is replaced every 3000 rounds?

Does polymer last longer than aluminum alloy?

 

[hso]

Most Sigs, like most metal frame handguns (CZ, 1911s, etc) are steel.

Some Sigs are alloy as are some CZs, 1911s, etc.

Al alloy has been in use for a long time and can be very durable. Not as durable as steel, but you trade the lighter weight of Al alloy handguns for some durability. The differences in durability are not of any importance to the vast majority of handgun owners who shoot a few hundred rounds in a lifetime or a year vs. thousands shot by a few.

 

[rcmodel]

I agree.

If you can afford to shoot enough to wear out a alloy frame gun?
You can afford to not worry about it in the first place.

10,000 rounds of typical 9mm ammo costs $3,000+ bucks.

Or about six times more then a typical 9mm costs!

If you can afford that much ammo, you can afford sending the gun back to the mother-ship, if it ever needs it.

rc

 

[jmr40]

Agreed, you would spend a lot to wear out any of them, but the aluminum allow's have the shortest expected frame life of all handguns. I haven't seen anything specifically on Sigs's but Beretta's aluminum frames are expected to last 30,000-35,000 rounds. I've seen this number as an estimate on other aluminum framed guns before.

There are many steel framed guns with well over 100,000 rounds and a few Glocks with over 300,000 rounds through them. I don't know if anyone really knows how long a steel or well made plastic frame will last.

But think about it, 30,000 rounds is 600 boxes of ammo. That is $6,000 worth of cheap ammo. If you can afford to shoot that much in ammo, you can afford another gun.

 

[orionengnr]

You can always buy a steel frame for range use and an alloy for carry...

 

[SharpsDressedMan]

Which Sigs are all steel? I thought just the special target ones were.