It's volleyball elbow & knee pads. I use them too as many others around here (Lithuania). Both when shooting my springer and pcp rifle. Personally for me they help to eliminate crosshair jumping up & down because of heart pulse. Plus it kinda help to cushion rifle weight on your joints and rifle lays more still. Plus when standing elbow -> elbow pad -> waist bone contact sort of gives more stability rather than just bonny elbow -> waist bone contact.
Linas also uses it in his kneeling position. It's hard to see, but he wears an elbow pad between his holding arm and thigh in this case.
11th of January 2014
14th of December 2013
Some wear them some don't. Both in FT and HFT. Both springer and PCP shooters.