Complex sentence: This weapon operates only in semi-automatic mode, and no selective-fire or otherwise full-automatic version of the Rx4 carbine is in the plans of Beretta, whom is already developing a completely different new-generation assault rifle called the ARX-160.
Split into simpler sentences: This weapon operates only in semi-automatic mode, and no selective-fire or otherwise full-automatic version of the Rx4 carbine planned. Beretta is already developing a completely different new-generation assault rifle called the ARX-160.