The advert which appeared over the weekend encouraged buyers to get in early. Picture: @RalstonReports

In an advertisement which ran over the weekend in the Las Vegas Review-Journal, Westside Armory also revealed how customers should buy now before they get expensive.

The advert, which has unfittingly predicted a Clinton victory, also raised a few eyebrows on social media after its “Pre-Hillary sale” ad was tweeted by KTNV political commentator Jon Ralston.

The post has been retweeted and liked thousands of times since.

The advert reads: “Don’t wait! Prices will skyrocket after Crooked Hillary gets in.”

A picture of a Smith & Wesson M&P Sport II, which is priced at $700 also appears in the advert.

Trump supporters have accused Clinton of wanting to takeaway American’s rights to guns, however the Democrat nominee said she wanted to see enhanced background checks and loopholes closed on who can buy them, The Washington Post reported.

Trump has also accused the Clinton campaign of wanting to destroy the Second Amendment which enshrines the rights of Americans to bear arms.

Democratic presidential candidate Hillary Clinton has been open about closing loopholes used to buying guns. Picture: Andrew HarnikSource:AP

Some on social media thought the advert was inappropriate while others maintained the shop had a right to advertise what it likes.

“Everything you do is worth its weight in gold. *** all these anti-gun, Hillary supporting ***-tards. You will have my business every time I am in town,” one person wrote on the store’s Facebook page.

However not everyone was supportive another user posted: “Are you people crazy? I can’t believe you would advertise this way. Do you have no morals ??? Is a human life so insignificant that would condone killing ... just to make a buck??!”