Aguila 22 LR Ammunition Quiet Colibri is an excellent choice for varmint and small game hunting. The Aguila 22 LR Ammunition Quiet Colibri has a unique rimfire design that uses a special primer that reduces the report by up to 70%. The Aguila 22 LR Ammunition Quiet Colibri is also very accurate and has a muzzle velocity of 1,060 feet per second.