How To Get The M1899 Pistol In RDR2

How to get the M1899 in under 1 minute. I personally hate 10-minute videos that can be done in 1, so my goal is to have a short, straightforward guide to finding the M1899. Purchasable after The Battle of Shady Belle, which is the last mission of Chapter 3. Watch out for pickpockets. The first time I tried to film this I got jumped and lost $500. I ran him down and got it back, but watch out