i recently got my gun its an ICS-20 retractable m4 a1 maybe 3 weeks ago it has a 2 piece gear box so it breaks like a real gun
just like that:
so i pull out the pin and it did just like the image you see ubove you.but know i cant put it back in like normal & cant even force it in i checked and theres nothing
currently im fustrated

because i dont know what to do bacause this is my first gun & i dont whant to mess up something.
i hope some1 can help me with this.