"The RIA 40 is a fantastic Light Machine Gun offering versatility and excellent enemy suppression."
The RIA 40 is the parent of the RIA 45 Para and a physical variant of the RIA T40. This is the worst of RIA's LMGs in the normal version, with the RIA 45 Para dealing slightly more damage, having a slightly faster reload (though this advantage may be considered negligible, which can be opposed with the bigger clip size) and a noticeably smaller movement penalty.
This weapon is worse than the RIA T40 in both normal and versions. The standard RIA T40 puts out more than triple the Standard 40's damage (including DoT), making it like an oversized Striker, smaller movement penalty than the T40 and cheaper ammunition. Some good augments would be: (in no particular order) Deadly for attack power and ammo efficiency, Overclocked, Adaptive, and Race Modded.
RIA 40 looks similar to GPMG M240 with a telescopic sight.
Difference on Mobile:
On Mobile platform, RIA 40's ammo box looks more a magazine than an ammo box.
The red colored parts in the version are nearly inverted in the mobile version.