I am a POF user and fan. However, POF is not currently manufacturing a PDW piston system. I'm also a 6.8 fan and user. LWRC has made a number of advances in the 6.8SPC community. Including designing a longer magazine and lower receiver system to get the most out of the 6.8 SPC cartridge. This LWRC uses a honey badger style collapsible stock. The stock works well. It deploys and retracts with the push of a button. I was able to deploy it one handed with a little practice. Once locked open, it is solid as a rock. It feels great in the hands. I would love to have one of these in my bug out bag in the car if anything bad ever happened.