One of my friends had difficulties finding buttpad spacers for his TRG-22, so I created a 3D Printable design of one in case anyone is interested:
I can also print one out for $15 + shipping for you (if you want more than one PM me)
Sako STG-22/STG-42 Buttpad Spacers (10, 15mm)
Sako STG-22/STG-42 10mm & 15mm Buttpad Spacers You can find longer bolts for mounting here: https://www.boltdepot.com/Metric_socket_cap_Class_12.9_alloy_steel_black_oxide_finish_4mm_x_0.7mm.aspx
cults3d.com
I can also print one out for $15 + shipping for you (if you want more than one PM me)