paintball gun problum

[nibbler125]

I have a pirahana paintball gun around 5 years old (guessing) and the bolt wont return all the way back after each shot. after 2 years of use and scince then it just sat. it has to manualy cocked after yeach shot I can strip it and I see nothing wrong with it and it appears to have plenty of lube on it. so any suggestions on what I can do to fix it im a noob to paintball this is just my dads old gun he gave to me and said do what ever u want with it. this is the closest fourm I could find for paintball guns so sorry if i am not suppost to post here

[cannon monkey]

for me it fine posting it here butt i a noob too it might get locked or wat ever i still dont knwo every rule my dad gave me a gun like that and all i can say is...check the oil check the spring
replace the orings
take it in to a pro shop see if they can fix it
the orings might be the problem

[iisthemuffin]

Is it a pirhana by chance? I was given a pirhana with the exact same problem. There was apiece on my trigger that had to be sanded off. Aside from that, i extended the bolt inside.

Just search on google.

[Hubb]

Strip it. Clean it. Replace the o-rings.

Also, make sure that it is assembled correctly. I had this problem with a Tippmann

And, cannon monkey, cam you please try to make proper grammar? It would be much appreciated.