People are probably gonna say this isn't valid but I feel like most of the bolt rifles should have 5 shots.
Because irl, that's how many they usually have. You have a 4 shot magazine and then you load one in the chamber for 5 shots
Also, the hunter loading bullets into the gun itself would be a lot better than them just clunking a magazine in.
For certain rifles, perhaps make it so we can choose between wood and synthetic. At most, this would require fairly minimal changes to the model of the stock and grip