2.3 Air Pistol (10 m)

Calibre: 4.5 mm (.177 cal), single-shot (ISSF Section 8); Maximum weight: 1.5 kg (3.3 lb); Grip: Must not extend above the wrist (no wrist support); the angle between the grip and barrel axis is regulated (ISSF Section 8)

Source: Section 8

Send this to your friend — argument over.