Question: how do you pick up weapons in red dead redemption 2?
Answer: Holster your weapon by tapping the left bumper (LB/L1). If you see a weapon on a body that you want to pick up just hold down the right bumper (RB/R1) and you'll swap it for the one you currently have in your hands. Be careful with this as you can end up leaving behind one of your favourite or customized weapons.