Kind of going to avoid the whole gun thing ^ , being that I despise the fact that civilians feel the need to carry them in the first place, and secondly that anyone outside of an army wants to own assault rifles- literally a weapon designed for killing lots of people quickly, with no value for either self-protection or hunting.
Russia, believe it or not is in a very fragile state. Its economy is weak, the government is struggling and the reality is the Russian Military is currently too big for it to deploy (same thing with North Korea). That being said, it is still armed to the teeth with nuclear weapons. Because of this shows of force against them really are not the best way to get it to capitulate to global demands (for their support for ukrainian separatists to cease), however trade sanctions such as those mentioned above ^ , will have a dramatic and very real effect on the Russian economy and Government with comparatively few sacrifices having to be made in the west.
By imposing sanctions your government is weakening russia and forcing her hand
thats why you can't buy your unnecessarily large gun <3