245696
To achieve a sufficient level of firepower and protection , given the size requirements , the Lince was to use Rheinmetall 's 120 mm L/44 tank-gun and German composite armour from the Leopard 2A4 .
 Rheinmetall 's
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rheinmetall 's