Romulan disruptor rifle
The Romulan disruptor rifle was a type of Romulan technology delivered in the form of a disruptor rifle, used by Romulan military personnel as a larger alternative to the Romulan disruptor pistol. This type of weapon was classified by Starfleet as a Type 3 disruptor, based on the type of blast pattern it left. ()

In 2368, the rifle was small and thin in design,  and fired a clear-blue beam. () That year, while on Romulus, Spock acquired a disruptor rifle from a soldier he incapacitated. He later aimed the same rifle at Sela, and said apologetically, "I'm afraid I don't know too much about Romulan disruptor settings…" prompting her immediate surrender. ()

By 2371, the rifle was enlarged and given a much sleeker design. The soldiers who served aboard Lovok's warbird carried the revised type of rifle as they escorted Odo and Garak to the ship's ready room. () 

By 2387, it had been modified with a more conventional shoulder-braced configuration. In the alternate reality in 2258,  and  fired these "future" prime reality rifles to sabotage the Naradas drill after Chief Engineer Olson, who was carrying their explosive charges, had died. ()

Those used in 2399 did not include a stun setting. ()

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Appearances

Background information 
The original Romulan disruptor rifle began life as the rifle used by the Ferengi Sovak in  and later the Ferengi Morta in . It was in turn, used by the Talarians in , before found a newlife as a Romulan rifle for both parts of both "Unification" and "Gambit".

According to the script for , the Romulans involved in "the chase" appeared with "heavy-duty disruptor rifles", however, in the filmed episode they were all carrying disruptor pistols.

The second type of Romulan disruptor rifle first appeared in "Improbable Cause", and would later be reused as, again, another Ferengi rifle in , then finally, by the Nakan in the  episode . 

It was designed by Jim Martin. (The Art of Star Trek (pp. 126-127)) In all, twelve copies of this prop were sold as part of the It's A Wrap! sale and auction, eight described as "Romulan disruptor rifle"/"Romulan disruptor carbine", and four described as "Ferengi disruptor rifles". All measured approximately 19 x 9 x 2.75 inches in length.

Apocrypha 
According to the ization of , Sela was prompted to lay down her weapon by the knowledge that Romulan disruptors have no stun setting: high settings will vaporize the target, while lower settings will cause his or her organs to explode.  

In the video game , a further model of Romulan disruptor rifle can be seen, very similar in appearance to the Romulan pistol from the 24th century, being found throughout a secret Romulan base on the planet Galorndon Core II.   

Romulus
Hand-held weapons
de:Romulanisches Disruptorgewehr
Directed energy weapons