I’m trying to put a pistol grip on my 20 gauge 870 but the bolt is stuck. What do I do?

This subreddit is for Remington firearms and ammunition. Topics can include classics like the 870 and the 700 to new models like the 887 and 783 to ammunition and accessories. Feel free to share pictures, videos, news, stories, reviews (good and bad), tips & advice, questions, how-to guides, un-boxing's, etc. If you have something negative to say about a Remington product, feel free to voice your issue here, but please keep it civil and polite (that goes for both sides of any argument).