I've been buying these for a while in anticipation of my Vector V51. Plans have changed, need to sell now.
These are the two piece kind, the ones that actually work. I do not currently own a 7.62 HK so I cannot vouch for their reliability. I have used similar mags in a friends's HK51 without problem.
There are two slightly different types, three each. Three look new, the others used. All six have new looking chrome followers. SOLD PF each plus shipping.
I accept USPS money orders or PayPal from a bank account (NOT a credit card, email for account number). Yeah, I know, PayPal sucks.