RuckGear's 50 Cal Bottle Opener are Crafted from a US Military 50 caliber BMG bullet that was once fired. An Engraved Bullet Bottle Opener is the ULTIMATE Piece for the "man cave". Perfect as a groomsmen gift, best man gift, father's day, Christmas, Anniversaries and any firearms fan. The 50 Cal Bottle Opener is the perfect gift for any occasion. Engraved bullet bottle openers give the WOW factor!