This is a two-part review done by Bruce of BB2K Airsoft on the Modify PP2K GBB. The first video is a full rundown of the GBB SMG and the second is showing how to disassemble it... "Today we have a review of the Modify PP2K Gen2 for you. The Airsoft version of the Russian submachine gun KBP PP-2000 comes in generation 2 with a CO2 magazine. Unfortunately, the Airsoft is not built for this so that damage is inevitable! The predetermined breaking point is called 'Positive Stop'. At Modify there is already a reinforced version of the Positive Stop and the Bolt Carrier. It would have been commendable of Modify, if these improved parts were immediately installed in the CO2 version, instead of selling these for again much money. I hope therefore strongly for a Generation3. Until then I advise against CO2 magazines!! But now enough annoyed about Modify. Have fun with the review of the actually coolest Airsoft MP of all times."