If it is an older gun be careful, and have it checked out. Sear engagement can change when the wood inletting around the locks shrinks over time, causing the gun to double.I had a beautiful Field Grade 12 ga. FW w/ejc. ,26in. barrel IC/M, straight grip and beautiful wood, made in 1937. It had not been shot in 46 years. First few rounds were o.k. but then it started to double. Sent it to a top notch gunsmith...verdict... going to have to restock. I sadly sold it to someone who wanted a wallhanger for their den decoration, where it hangs today.
