Walther Mod. P99 cal. 9mm P.A.K ; 312.02.00 ; PTB 637 Backstrap replacement.
Printed it in PLA, 0.1mm layer, 15% organic support.
For perfectly smooth look, slightly grinding needed. As I actually printed it in white PLA, I airbrushed it afterwards, so pictures will follow.
The author marked this model as their own original creation.