Find out how the weapon affinity / familiarity system in Red Dead Redemption 2 works with this guide! This includes how to build weapon affinity & its effects.
Table of Contents
What is Weapon Affinity / Familiarity?

Weapons Perform Better the More They are Used
Arthurs build affinity the more he uses a specific weapon types, affecting his accuracy and other stats with that weapon. The more you use a weapon, the more effective Arthur will be with it.
Overuse of Weapons Degrades it
On the other hand, using a weapon too much will put it at risk of weapon degradation. Constant cleaning and oiling is required to keep a weapon at its top shape!
Check Out Weapon Care & DegradationAffinity Affects Weapon Stats
Building weapon affinity will affect weapon stats like accuracy, reloading speed, and even firing speed. It won't be a sudden jump in stats, but rather a gradual increase the more the weapon is used.
Tips to Build Weapon Affinity
Hunt Wild Animals with the Weapon

Wild animals are a great way to build affinity as they are an easier target, most of them usually don't fight back, and you won't get a bounty for killing them!
Hunting Tips & Tricks: Legendary Animal LocationsGo Bounty Hunting

When you go bounty hunting, make sure not to shoot to kill so you could still get the reward. Shoot the pistols out of criminals' hands to disarm them instead.