Dimensiune standard (STD) , Alezaj pist. 97.5 mm, Lungime 107.8 mm, Inaltime compresie 62.8 mm, Adancime oala 1 22.38 mm, Diametru oala 43.4 mm, Inaltime perete 20.6 mm, Bolt- 36.0 mm, Lungime bolt 82.5 mm, acoperit (cu un strat protector), Numar de productie 97 L 21, cu segment piston