Welp , after years of procrastinating , guess I ' m starting my new build today ! !<| sep |> Does each manufacture have it ' s own specifications ? Does that affect how each others weapons are built ? In terms of influence , all manufacturers use the same ammo , style is completely different between them . Wait , what ? ?? Are they saying there will only be one ammo sizetype ? ?? That ' s bullshit . For example , I can buy . 223 in various specs muzzle velocity , bullet type , bullet weight from half a dozen or more different manufacturers . I would have expected SC to be similar and at least have ammo with different muzzle velocities . I ' d be pretty disappointed if there ' s only one ammo type across the board , even if they are different calibres .