The Air Arms Evolution 2 is a top-of-the-line 12 ft-lb field target air rifle. Features a new firing valve system for increased efficiency and consistency, fixed cylinder with quick-release filling valve, under-stock manometer (air pressure gauge), restyled lighter stock, fully adjustable buttpad, adjustable cheekpiece, adjustable forearm, swing-out sighting level, swing-out windage indicator mount and a swaged barrel.