"arm it with" is a correct and usable expression in written English.
It is usually used to refer to the action of equipping something with something else, especially something of a defensive or offensive nature. For example, you could say "The townspeople armed themselves with guns in order to protect their town from invaders".
One way out is to arm it with a needle of challenge.
Pakistan wants the US to arm it with unmanned drones and helicopters.
Plate your pain with reinforced steel, fit it with tire treads and arm it with the revolver you keep in the kitchen cabinet next to the Coco Pops. 2. Exhibit your pride; curate it like a museum display.
It will have broad data gathering authority to arm it with information on cases and policies that in the past has been either scarce or too scattered to assemble.
While the OFT cannot take up individual cases, it needs victims to come forward to arm it with evidence that it can use in a "stop now order" - a new European Union legal directive that blocks businesses deemed harmful to consumer interests.
The upshot was a mind-numbing sequence of summits, statements, communiqués, initiatives and letters of intent, stretching from St Malo to Washington to Helsinki, the overall gist of which was that Britain would henceforth work harder inside the EU to arm it with a common foreign and security policy and an "autonomous" defence capability, albeit still within NATO.
During the 16th century, an attempt was made to adapt cavalry to the new circumstances by arming it with short firearms such as pistols and carbines.
For the last year, the Mars Science Laboratory, aptly named Curiosity, has been traversing the surface of Gale Crater, poking and prodding rocks and soils and sniffing the atmosphere with each of the sophisticated science and sampling instruments we armed it with.
We therefore engineered MV-eGFP for IFN evasion and more efficient intratumoral spread by arming it with the P gene from wild-type IC-B strain MV, thus generating MV-eGFP-Pwt.
J.J. Abrams, the director who revitalized the series by arming it with a youthful cast and sprinkling in lens flares, departed "Star Trek" to make "Star Wars: The Force Awakens".
Because of "arthritis" in its robot arm, it now drives with the arm extended, to avoid the risk that it will become stuck in its retracted position.
