A quick video from Nonocat as gets rockin' and rollin' doing a mag dump of the MP5A5 and MP5K  Gas Blowbacks from VFC... "So many have asked/tell me that "the VFC MP5 GBBs aren't that good. Especially feeding and gas efficiency"... In one way or the other.

I personally would reserve this comment for the Stock Gen 1s or the declining QC that may be found in some Gen 2s.

That said, I've had no issues running any of my tuned Gen 1s and my stock Gen 2s.  So thought I would make a short video to answer it. :)"