A Florida gun maker has created an "ISIS-proof" assault rifle that has raised the ire of Muslim groups.

Designed so Islamic State militants "could not touch it," the AR-15, made by Spike's Tactical in Apopka, is inscribed with the biblical verse, “Blessed be the Lord my Rock, who trains my hands for war, my fingers for battle" (Pslams 144:1). It is also etched with a Knight's Templar Long Cross - a Christian Crusader symbol.

The rifle's safety selector has three settings: Peace, War, and God Wills it.

“Off the cuff I said I’d like to have a gun that if a Muslim terrorist picked it up a bolt of lightning would hit and knock him dead,” Ben “Mookie” Thomas, the company's spokesperson and a former Navy SEAL, told the Orlando Sentinel.

According to Thomas, he came up with the idea after finding out that Islamic State militants were using American made arms which were previously in Iraqi army hands.

Open gallery view The AR-15 'Crusader' rifle as seen in a Spike's Tactical video. Note the Bible verse and safety settings. Credit: Screengrab from Spike's Tactical video

Soon after its launch on Wednesday, The Council on American-Islamic Relations of Florida pointed out that out of 205 mass killings in the United States in 2015, only one involved a Muslim.

"Is it designed for Christian terrorists?" Hasan Shibly, executive director of the Council, asked rhetorically, adding that it's time gun makers stop trying to "make a buck" on gun violence.