It was saranga bro and kodanda means bow,let me give you an example in sundarkand their is a chaupayi Har kodand kathin jehi bhnja,tehi samait mad nrap dal gnja,char dushan trisira aru Vaali ,badhe sakal atulit balsali(it's in ramcharit manas)I have ramcharit manas as well as valimiki Ramayana as well as Anand Ramayana along with 18 Puranas and few uppuranas with me ,so yes it was sharanga,along with which an celestial arrow was given to Rama and khadaga think it was kaaljayi of lord shiva was given to lakshmana,with which he slayed son of srupnakha.
If Rama broke the pinaki, he should have broken the ajagava as well - why this partiality to his 'own' bow? 😈Vayuu, the bow given to Rama by Agastya was not the Saranga - although the name 'Kodanda' doesn't appear in Valmiki.