Amazon.com : DSTE Replacement for Pro D-BG4 Vertical Battery Grip Compatible Pentax K-7 K-5 K-5ii K-5iis Digital Camera as D-LI90 : Digital Camera Battery Grips : Electronics
Pentax D-BG4 Battery Hand Grip for K-5 K-7 Digital SLR from Japan | eBay
USED] Pentax D-BG4 Battery Grip for Pentax K-7 & K-5 (Near New Condition!) - SOLD - ShaShinKi