D BG4 Battery Grip for Pentax K 5 II, K 5 IIS, K 5, K5, K 7, K7, K5IIS and K7D SLR Camera, D LI90, DLI90.|battery grip|battery grip for pentaxpentax battery grip - AliExpress
Pentax K5- II reviews: Showing the competition how it's done
Pentax K-5 II vs Nikon D7000 vs Canon 60D vs K-5 - Comparison