Mohamed al-Barghati - who already tried to submit his resignation two months ago - has been asked to step down after fighting in Tripoli left at least seven people dead.
Reports in the Czech press claim that companies have been negotiating a LD65m ($52m) armoured amphibious vehicles contract, but the deal could be blocked by the Czech government.
The Libyan government has asked to buy two C-130 military transport aircraft, plus associated equipment and training, in a deal which if approved would be worth some $588m (LD735m).
The Libyan navy has received the first instalment of 30 high speed patrol boats from France's Sillinger
Mohamed al-Barghati has retracted his earlier resignation, which was made in protest at the ongoing presence of armed groups at several government ministries.
The Royal Navy last week sent a warship to Tripoli as part of efforts to increase trade in naval equipment and training.
The French press reports that Sillinger, a subsidiary of Groupe Marck, has agreed a sale of 50 rigid inflatable boats (RIBs) to the Libyan armed forces.
According to the Quryna newspaper, Turkey's Ministry of Defence has signed an agreement with Libya to help secure borders and strategic locations in the eastern part of the country.