That might be true
however the MP5 you have experience with is either too old or have not been properly taken care of(Those Inservice of the LEAs)
i have a POF 4 MP5K (Extreme poor finish BTW; the polymer handguards feel they were made out of cheap plastic)
Fired a mixture of Tula Chinese and POF rounds through it(Combination of both steel and brass cased ammo)
it works like a charm
you can not expect a gun thats been in service for more than 15-20 years with thousands of rounds through it to cycle correctly
unless of course its an AK
AKs are built like a tank
That particularly goes to the way the idea was conceived
Simple reliable design with not too many moving parts at the expense of accuracy
But then again choice of a firearm goes with the theater of employment
AKs suck at close quarters Id pick an MP5 over AK/AR at close ranges any time of the day
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