Holy mother of God! Look no further!

It is both much more compact AND longer! It is sub-machine gun but ALSO machine gun! It is assault rifle! But ALSO sniper rifle! It is chambered for larger cartridge - but ALSO has less recoil!

This rifle isn't just ambidextrous - it's also ambiguous!

I think I will design a modular weapons system too - I will design a plastic handle, trigger guard and modifiable butt - and this will be completely compliant with the demands of any requirement in any modern weapon!