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Military Guns and Ammunition

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This is intended for people interested in the subject of military guns and their ammunition, with emphasis on automatic weapons.

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LMAO Germany adopts an AR-15   Small Arms <20mm

Started 14/9/20 by QuintusO; 35071 views.
roguetechie

From: roguetechie

16/9/20

There are other people who make barrels with that same steel though. HK definitely does not have a lock on that particular thing.

gatnerd

From: gatnerd

17/9/20

Do you know which other companies are using the same 'HK Steel?"

I seem to recall the steel was French? 

roguetechie

From: roguetechie

17/9/20

I don't have that information offhand but iirc it's an aermet derivative steel and there's people doing high end CHF barrels using it here stateside.

I'll look at my notes

QuintusO

From: QuintusO

17/9/20

Aubert & Duval is the supplier. I can't share the exact alloy, but it's a ChroMoVan steel.

JPeelen

From: JPeelen

17/9/20

The typical German military barrel steel alloy is 32 CrMoV 12 10 and indeed I have seen batches from French steel mills.   

QuintusO

From: QuintusO

17/9/20

Guess I can post this now, then.

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In reply toRe: msg 24
gatnerd

From: gatnerd

18/9/20

Thanks guys, very helpful.

Do either of you know the H&K RC heat treatment?

I seem to recall that the standard US 4150 was RC 32-34, whereas the H&K was RC 42-46?

I'm a pocket knife nerd originally, prior to getting into guns. Thats an area where steel and RC harnesses are both tremendously important to overall edge retention. 

So I imagine that using a harder RC treatment would also factor into overall 'rifling retention.' 

For example, a typical bayonet is 51-53RC vs 59-61 for a modern, high end pocket knife. That doesnt seem like much of a spread, but theres a huge difference in overall edge retention. Even the difference between 57 and 60rc is noticeable on a pocket knife.

QuintusO

From: QuintusO

18/9/20

That's about right.

In reply toRe: msg 26
tidusyuki

From: tidusyuki

18/9/20

I'm still not in the clear of why they decided to go with Haenel's AR aside from the rumors(?) that it's supposed to be a cheaper alt. of the 416.

I thought the bundeswehr have already fond of their 416. And The 433 might be more pricey but it got a lot of new features and improvements from the G36. Did H&K messed up in the run somewhere? or did the Haenel and Caracal just have a more powerful political power?
 

Mr. T (MrT4)

From: Mr. T (MrT4)

18/9/20

52mio Eur cheaper is a huge chunk on a 250mio Eur deal, the problem is if that saving is mostly down to creative accounting in regards to firearm life span  being longer due to that replaceable cam thingy.

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