When a Clueless First-Person Shooter Player Falls into Another World Vol 1

From the Seven Seas Entertainment edition

When one FPS gamer clumsily falls off the map of his MMORPG, he finds himself transported to a totally different world! Can he use his shooter skills in a world of magic and fantasy? Light novels also from Seven Seas! Schwarz, a die-hard FPS gamer, was in the middle of a Virtual Reality Multiple Battlefield match when one wrong step sent him tumbling off the map. He expected “Game Over” — instead, he woke up in a world of swords and sorcery. With no way home and no magic to his name, Schwarz is quickly branded a “dud” by the locals… until his modern rifle proves more than a match for spellcraft. But in a land where magic reigns supreme, what happens when the man with the gun runs out of ammo?

Source: Penguin Random House API