EAA Witness deals

[CJ]

Sure, just like +p+ ammo will wear out a 9mm gun faster.

All in all, it appears that with the proper piece, an mp5/10 is a solid gun. There was no mention of one rattling themselves apart even with the low piece.

Bad comparison, +p+ is not a factory pressure and exceed SAAMI specs for the cartridge. A proper comparison would be a 9mm that wears out prematurely with 9mm rounds fired through it. We're talking in spec factory loads here. They would eventually fail on full house loads, it's inevitable. We're not talking "hot" loads here, we're talking run of the mill in spec pressure 10mm rounds. A MP5/10 out of the box will begin a degradation process eventually (however long that is) of failing on regular 10mm. It seems like you REALLY don't want to admit it, but it's clear as day. The post above mentions if you start seeing deforming of the receiver, you need to change the locking piece, it's already on it's way by that point.

[Moose242]

Sure, but back to the point: A 10mm mp5 will not explode.
The 10mm mp5 was made for the FBI. The FBI used low pressure ammo. As such, a locking piece to utilize this low pressure ammo was also developed. It is that simple really.

[CJ]

Sure, but back to the point: A 10mm mp5 will not explode.
The 10mm mp5 was made for the FBI.

It will eventually. It is inevitable. And it will do it FAR before the projected service life I promise you. All of what you've posted above pretty much confirms the rumors are in fact true. However, it highlights that the rumors are due to negligence in not reading the manual (which is not how it was communicated to me). But, as with most everything, there is a gem of truth. Now, generally people suspect the reason the MP5/10 stopped production was due to these failures. HK says it because of demand. Well, we all know that rumors about guns spread faster than a fire at a refinery. It's possible the drop in demand was fueled by careless departments. Who knows. In any event, the MP5/10 should have come with the high pressure piece as standard, and the low pressure piece as optional equipment. Or, the FBI versions should have come with the low pressure locking pieces, and no other guns. It's careless and downright stupid to include a locking piece which damages the gun on even the lowest loads. I hope we can agree on that.

[Moose242]

Jesus dude, I could have a notarized statement from Jesus and Alex Siedel that says an MP5/10 has never exploded and you would come back with a self notarized statement declaring them wrong.

[CJ]

Jesus dude, I could have a notarized statement from Jesus and Alex Siedel that says an MP5/10 has never exploded and you would come back with a self notarized statement declaring them wrong.

I would have to suspend reality to believe that. If the receiver is deforming, it's going to fail prematurely, that's obvious. You can't admit an HK error! How much more clear could it be?!

[Moose242]

It is not an error when it is the fault of the user to make sure there equipment is configured properly. It is like blaming Glock people for having guns blowup over shooting cast ammo.

[CJ]

It is not an error when it is the fault of the user to make sure there equipment is configured properly. It is like blaming Glock people for having guns blowup over shooting cast ammo.

Here's our 10mm sub machine gun. Don't shoot 10mm though it without changing this piece. Clearly the reputation that follows the gun isn't just invented, there's a reason it's a commonly shared rumor, there is truth behind it. I understand your perspective, it makes sense. However, I fault HK more than the owner not reading the manual. That piece shouldn't even be in that gun from the factory.

[Moose242]

It should, as per the FBI's requirement. If the customer wants to run light loads, you need to offer that capability. I hold firm to the belief that the 10s are more stout than either of us previously believed.

[CJ]

I don't disagree with that. It's clear HK had a locking piece and a configuration to make them last indefinitely within the service life period. That as of before today was not my perception, and not what I had been told. I think the problem with MP5/10's reputation and the veracity of this rumor is it's own rarity. So few of these guns were made and exist, it's extremely difficult to confirm to deny anything about it. Both you and I believed the rumor for years and had heard it from multiple people, but it took your connections with an HK rep to actually dispel it. That speaks volumes.

[phaux]

[CJ]

This makes me really want to build an MP5/10 again, but then I think about it any my money is best spent on a 10mm upper. Or a MAC 10.

[phaux]

This makes me really want to build an MP5/10 again, but then I think about it any my money is best spent on a 10mm upper. Or a MAC 10.

Shrike

[CJ]

Here's a quote I ran across (researching a 10mm upper) from Chuck Taylor on the 10mm and FBI loads:

How you load your 10mm is obviously important. The downloaded, subsonic FBI round – known as the “minus-P” in the circles of the 10mm fans – has the same power as the .40 S&W cartridge that Cooper dubbed “the 10mm Short.” If that’s the power level you’re comfortable with – about the same as a 19th Century black powder .38/40 revolver – you’ll get more bullets and a smaller package with a gun chambered for .40 S&W rather than 10mm Auto.

With the full loads, the 10mm does in fact exceed the .357 Magnum. That caliber’s most proven antipersonnel load is a .357-inch diameter 125 grain bullet at 1450 fps; you can get a .400-inch diameter 135 grain bullet going the same speed out of a 10mm.

[Pokulski-Blatz]

Shrike 2

[YALE]

Belt-fed 10mm?