Keywords: PGRS-1 muzzle brake 2.jpg PGRS-1 muzzle brake en wikipedia Quadell CommonsHelper 2007-07-30 Hiram Maxim wikipedia en Hiram Maxim original upload log page en wikipedia Dsc00676 jpg 2007-07-30 17 35 Hiram Maxim 2355×748× 296284 bytes <nowiki></nowiki> PGRS-1 muzzle brakes |