Insert this at weapon_rpg in weapons.meta

          <CameraFov value="45.000000" />
          <FirstPersonScopeFov value="40.00000"/>
          <FirstPersonRNGOffset x="0.000000" y="0.000000" z="0.000000" />
          <FirstPersonRNGRotationOffset x="2.000000" y="0.000000" z="2.000000" />
          <FirstPersonLTOffset x="0.000000" y="0.000000" z="0.000000" />
          <FirstPersonLTRotationOffset x="1.000000" y="0.000000" z="0.000000" />
          <FirstPersonScopeOffset x="0.00000" y="0.15" z="0.006" />
          <FirstPersonScopeAttachmentOffset x="0.00000" y="0.0000" z="0.0150" />
          <FirstPersonScopeRotationOffset x="0.00000" y="0.0000" z="0.0000" />
          <FirstPersonScopeAttachmentRotationOffset x="0.00000" y="0.0000" z="0.0000" />
          <FirstPersonAsThirdPersonIdleOffset x="-0.050000" y="0.000000" z="-0.050000" />
          <FirstPersonAsThirdPersonRNGOffset x="0.000000" y="0.000000" z="-0.075000" />
          <FirstPersonAsThirdPersonLTOffset x="0.020000" y="0.000000" z="-0.07500000" />
          <FirstPersonAsThirdPersonScopeOffset x="0.040" y="-0.02500000" z="-0.07500000" />
          <FirstPersonAsThirdPersonWeaponBlockedOffset x="0.0000000" y="0.100000" z="-0.050000" />
          <FirstPersonDofSubjectMagnificationPowerFactorNear value="1.025000" />
          <FirstPersonDofMaxNearInFocusDistance value="0.000000" />
          <FirstPersonDofMaxNearInFocusDistanceBlendLevel value="0.300000" />
          <ZoomFactorForAccurateMode value="1.000000" />