The Sako S20 is a versatile rifle suitable for hunting and precision shooting, thanks to its hybrid design. Its modular construction enables customization of the stock to match individual preferences. The S20 Hunter model is equipped with an ergonomic thumbhole stock and includes spacers for adjusting the length of pull. Additionally, a numbered quick-adjust cheekpiece ensures an optimal sight picture.

Other notable features of the Sako S20 include a cold hammer forged barrel, a cartridge magazine, a full aluminum chassis, adjustable length of pull, a multi-adjustable trigger, and a comprehensive V-shaped aluminum bedding system.