I just purchased a Contender Barrel and it will not unlock from the receiver unless I take the pin out and take about 5 min and keep fooling with it. Do you know why this happens? I have 3 other barrels and no issues. Is it an easy fix or should I try to send it back?

It has the one piece locking bolt, one of my barrels has a two piece and the other two also have the one piece and I have no issues. Do you think changing the locking bolt to a two piece will help?

Figured it out I replaced the bolt with a 2 peice off another barrel and it fixed it

Good job!