Hi Mike, Yes no problem. It fits the VP9 SK according to the HK web site P30SK/VP9SK 10rd Ext Floorplate Mag SKU#239363S --- hkparts.net/shop/pc/HK-VP9SK-P30SK-9mm-10-Round-Magazine-With-Extended-Finger-Rest-p17993.htm

The Heckler & Koch P30SK Magazine is a standard factory replacement magazine. This magazine is for P30SK models chambered in 9mm Luger and holds 10 rounds of ammunition. It is made of steel with a black finish and is made to HK specifications and tolerances, using the same manufacturing and materials as the original equipment magazines, ensuring perfect fit and operation.
Specifications and Features:
Heckler & Koch 239363S
9mm Luger
10 Rounds
Steel Magazine Body
Extended Polymer Base Plate
Matte Black
>>>>Fits:
HK P30SK / HK VP9

This magazine will work Mike. hkparts.net/shop/pc/HK-VP9SK-P30SK-9mm-10-Round-Magazine-With-Extended-Finger-Rest-p17993.htm

Yes it fits the VP9 SK according to the HK web site P30SK/VP9SK 10rd Ext Floorplate Mag
SKU#239363S