I agree, he's light on the accessories, so it would be nice to see him come with one, as it would make sense, but then agina, in the film, we only ever see him use one gun, the stormtrooper gun
The reason that Hasbro packagd him with the rebel trooper blaster is becuase kenner gave him that gun. the reason kenner gave him that gun is the originl kenner toys from the 80's were all based on the Publicity photos fo the characters, which is also why the vintage lando is smiling. the only gun lando had in the publicity photos was the REbel trooper blaster.
however, looking at it now, i think that's actualy ponda boba's blaster, not the rebel trooper gun. Look closely at the end of the scope, you'l notice it's missing the litte clear bubble. I wonder if that's the gun he comes with as well..
Nope, lookinc closer, I see that he does indeed come with the trooper blaster. it's hasbro-accurate, but not photo accurate. Even still. i have not yet seen a picture of him holding the security blaster.
Also, in return of the jedi, he "used" this pistol. he never drew it, but it was in his holster
Also, this pic i found while looking for lando reference photos made me laugh