Am i being scammed?

I got a message on Instagram saying <br><br>“Thank you for your advert on Instagram i am ready to pay for the 갖(whatever) you posted for sale on your Instagram page how i will get it from you after you have received payment ??”<br><br> I posted my bushmaster m4 on the gun accessory sales and got a response all seemed normal until this where instagram was mentioned. I don’t have an instagram. I’ve been on this site for a little while and haven’t had any issues, but now I don’t know if it’s legit or not. I just don’t want to be scammed or something.