Not sure if Remington still does it or not, but they used to have you send in your rifle and they wanted you to pay them to change it.
HECK OF A DEAL !
Remington did the recall on the 660 I have. The gent discovered the rifle fired when the bolt closed (dry fired) and insisted on having it fixed before I bought it. I told him to contact Remington because there was a recall years ago. Remington sent him a link to print shipping labels and info for free shipping to a repair facility. Remington installed a new trigger without the bolt lock. The turn around was quite fast. I installed a new safety made by NULA that automatically locks the bolt with the safety on but allows you to unlock the bolt with the safty on.